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GM seeks national mandate for zero-emissions cars

DETROIT — General Motors says it will ask the federal government for one national gas mileage standard, including a requirement that a percentage of auto companies' sales be zero-emissions vehicles. Mark Reuss, GM's executive vice president of product development, said the company will propose that a certain percentage of nationwide sales be made up of vehicles that run on electricity or hydrogen fuel cells. GM says a nationwide program modeled on such a requirement in California could result in 7 million electric vehicles, or EVs, on U.S. roads by 2030. California wants 15.4 percent of vehicle sales by 2025 to be EVs or other zero emission vehicles. Nine other states, including Maryland, Massachusetts, New Jersey and New York, have adopted those requirements. In January, California Governor Jerry Brown set a target of 5 million zero-emission vehicles in California by 2030. The Trump administration criticizes California's ZEV mandate, saying it requires automakers to spend tens of billions of dollars developing vehicles that most consumers do not want, only to sell them at a loss. Reuss told reporters that governments and industries in Asia and Europe "are working together to enact policies now to hasten the shift to an all-electric future. It's very simple: America has the opportunity to lead in the technologies of the future." A national mandate also would create jobs and reduce fuel consumption, CO2 emissions and "make EVs more affordable," Reuss added. GM, the nation's largest automaker, will spell out the request Friday in written comments on a Trump administration proposal to roll back Obama-era fuel economy and emissions standards, freezing them at 2020 levels instead of gradually making them tougher. Under a regulation finalized by the Environmental Protection Agency at the end of the Obama administration, the fleet of new automobiles would have to get 36 miles per gallon by 2025, 10 mpg higher than the current requirement. But the Trump administration's preferred plan is to freeze the standards starting in 2021. Administration officials say waiving the tougher fuel efficiency requirements would make vehicles more affordable, which would get safer cars into consumer hands more quickly. GM on Thursday said it doesn't support the freeze, but wants flexibility to deal with consumers' shift from cars to less-efficient SUVs and trucks.

2018 Buick Enclave: How engineers made it larger, lighter, more sophisticated

Buick used the unveiling of the 2018 Enclave at the New York Auto Show to introduce its new range-topping Avenir sub-brand to the world. With fancier interior finishes and exterior details, it's Buick's latest effort to make itself a proper luxury brand (or perhaps re-establish itself as such). However, lost in the Avenir song and dance is the fact that the 2018 Buick Enclave is a (very) long-awaited all-new model regardless of the trim level one selects. Like the Chevrolet Traverse upon which it is based, the new Enclave is bigger than the vehicle it replaces but considerably lighter, by about 400 pounds. "We told every engineer, 'get your job done, but then take the weight out,'" said engineer Rick Spina as we hovered next to his larger yet lighter creation. His team therefore set about taking a little bit of weight out from just about everywhere, from using additional aluminum in the suspension to varying the thickness of the frame (thicker in places that needed to be stronger, thinner and therefore lighter in places that didn't). Only about 100 pounds came out of the body with the rest coming from elsewhere. Not only will the reduced weight improve fuel economy (Buick-estimated at 19 mpg combined with FWD versus 18 for the 2017 model) and presumably the old Enclave's rather ponderous handling, but it should only make things easier for the new powertrain: General Motors' now-familiar 3.6-liter V6 and its latest nine-speed automatic. With 302 horsepower and 260 pound-feet of torque, Buick says the new engine will need 7.2 seconds to reach 60 mph with FWD or 7.5 seconds with AWD. That's a second quicker than before. Besides acceleration, towing is also bumped up by 500 pounds to 5,000. For those models with all-wheel drive, the Enclave has the same basic system featured on range-topping versions of the Buick LaCrosse. Besides power being sent front and rear, it can also differ from right to left in the back, although Spina is quick to point out that capability is for traction-enhancing purposes rather than sporty, handling-enhancing torque-vectoring ones. Buick owners already appreciated the Enclave for its quietness so the engineers decided to take it that much further. This included altering the exhaust, improving body sealing (there are triple door seals), including active sound deadening and utilizing advanced materials that absorb sound as opposed to simply being thick, dense and heavy enough to keep it out.

2017 Buick LaCrosse First Drive

The 2017 Buick LaCrosse seems destined to never get the credit it deserves. It's bound to be dismissed as just another full-size sedan relic, ignored by those who habitually visit their Lexus dealer every few years for a new ES. This new LaCrosse will inevitably be overshadowed in the Buick showroom by SUVs and never fully appreciated by the majority of its buyers who simply want a big, comfy, and quiet car. That destiny would be a shame. The completely redesigned LaCrosse is now a legitimate luxury car, not because advertisements say it is, but for the way it drives, the way it looks, and the way it cossets you inside. The former is really the most impressive, since it's also the most surprising. During the LaCrosse press launch in Portland, Oregon, Buick boasted how comfortable and exceedingly quiet the car is, and indeed, it isolates road imperfections and allows for a pair of low talkers to converse in subdued tones. The big Buick sedan's low-effort steering will also satisfy the nice-and-easy tastes of most drivers. The best way to describe driving the LaCrosse is "unwaveringly pleasant." Yet, during that pleasant drive, road dips and mid-corner undulations don't make the comfort-tuned suspension bob and bound like its competitors might. Its body control and generally planted nature encourage speeds and confidence to creep ever so higher through successive sweeping corners on Oregon's densely forested Mist-Clatskanie Highway. Even that low-effort steering demonstrates precision, linearity, and just enough feedback to further spur on such a pace. This unexpected capability is best observed on cars equipped with the optional 20-inch wheels, which supplant the standard 18s and, more importantly, bring with them Continuous Damping Control (CDC) and GM's HiPer Strut front suspension, which is designed to quell torque steer and further improve cornering grip. You don't even have to engage CDC's firmer Sport mode to appreciate the LaCrosse's surprisingly sharp road manners. "We unleashed the engineers," chief engineer Jeffrey Yanssens said after our test drive. "I told them, 'I don't care how much it costs. I want you to know your system and I want your system to be the best it can be. What do you have to do to make that happen and what can I do to enable you to make that happen?'" Yanssens is honest and clearly proud of his team's work.