2013 Chevrolet Impala Lt on 2040-cars

Auto blog

Recharge Wrap-up: EV torque secrets, UC Davis maps future of biofuels

A UC Davis white paper maps out "Three Routes Forward for Biofuels," balancing investment risk with carbon benefits. The first option is "incremental," in which we tinker with the existing biofuel manufacturing infrastructure for small improvements over time. The "transitional" plan suggests integrating cellulosic production and other innovations with existing operations. The third route, called "leapfrogging," would mean building refineries based on new technology such as cellulosic and algae-based biofuels. The paper suggests ways the US could use these three routes together in different areas, and predicts the payoffs in terms of carbon emissions could be significant if the right people are willing to risk the capital. After all, financial advisers are always telling investors to diversify their portfolios to manage risk and rewards in the same way. Read more over at the UC Davis Institute of Transportation Studies. The Formula E Long Beach ePrix will offer free admission. The seventh round of the inaugural all-electric race season, which was moved from Los Angeles to the streets of Long Beach, will offer fans free grandstand and general admission. The race, which takes place on April 5, 2015, will use a 1.6-mile portion of IndyCar's Grand Prix of Long Beach. Read more at LA Times. Polaris is now offering its 2015 GEM electric vehicles, including the new street-legal eM1400 LSV. The passenger and utility vehicles come in two- to six-passenger configurations, many of which are street legal on roads with posted speed limits of up to 35 miles per hour. The eM1400 LSV utility vehicle seats two, offers 1,250 pounds of payload, 1,250 pounds of towing capacity, a top speed of 25 mph and a range of up to 45 miles. Its on-board charger plugs into any standard 110-volt outlet. Read more at Hybrid Cars and check out all the different configurations yourself at the Polaris website. In EVs, more torque does not always equal faster. Green Car Reports found this out when driving the Fiat 500e (with 147 pound-feet) against the similarly weighted Chevrolet Spark EV (with 400 pound-feet). The secret is, at least in part, in the gearing. The Fiat has a 9.6:1 reduction gear, making it quicker at lower speeds despite having far less available torque, while the Chevy uses a 3:1 ratio. The trade-off though, is in top speed. Furthermore, Chevy electronically limits the torque delivery at low speeds, as 400 pound-feet is a lot of launch for the little Spark EV to handle.

Chevy bringing Spark RS Concept to SEMA

Well, the SEMA mess has well and truly begun. Every year, an increasing number of automakers flock to the Las Vegas auto show, bringing accessories and concept vehicles that are both awesome as well as occasionally questionable. Chevy will bring an RS concept of the new Spark to SEMA, signaling that its styling package will be applied to the brand's smallest vehicle in the near future. We can expect the usual stuff in a production Spark RS – larger wheels, a slightly sportier cabin, a more aggressive body kit, and a small drop in ride height – but for the concept, Chevy wasn't restrained by things like budget. The front splitter, and sill extensions, foglight surrounds, and rear bumper insert are all finished in carbon fiber. The 17-inch alloys are apparently inspired by the Corvette Z06's Z07 package, while the Dark Liquid Switchblade Silver paint is broken up only by a driver's-side stripe. The company is also using SEMA to show its new Red Line accessories, features both concept and production parts for the Trax, Camaro, Malibu, Colorado, and Sierra. Every vehicle gets Enhanced Silver Metallic paint, a charcoal finish on the roof, satin graphite/red graphics, black/red badge kits, and aside from the Colorado, tinted lamps. Individual mods for the Trax include relatively simple tweaks, including new 18-inch wheels, blacked-out bowtie badges, a lowered ride height, and custom badging. It's a similar story on the Malibu, except that its 19-inch wheels are a smidge larger, and its lowered ride height is the result of a concept kit. The first concept based on the new Camaro opts for 20-inch wheels, while adding a few more performance items. The ride height has been lowered, there's a new air intake system, and an upgraded brake package. Chevy has also replaced the front upper and lower grilles inserts with red accents. On the pickup side of the coin, the Colorado gets 18-inch wheels, new intake and exhaust systems, Goodyear Wrangler Fortitude tires, and flared wheelarches. The Silverado gets similar intake and exhaust upgrades, as well as the largest wheels of them all, with 22s at all four corners. The full-size truck also gets a Brembo brake package, while every vehicle, aside from the Camaro, gets Thule roof-mounted accessories. You can check out all six concepts in the gallery above, and then be sure to keep an eye open for live images from the floor of the 2015 SEMA show, slated to open next month.

Updated Chevy Silverado spied, possibly with aluminum components

Chevrolet is readying a refresh for its trusty Silverado pickup, and these spy shots give us our first glimpse at what might be in store. The front and rear fascias of this prototype are covered, obscuring some styling tweaks (with LED accents up front). More interestingly, our spies suggest that many of the Silverado's body components could move to aluminum with this mid-cycle update. The hood will go from steel to the lighter alloy, and it's possible the front fenders could benefit from the weight-saving material, too. Ford's latest F-150 is extremely aluminum-intensive, and by switching the construction, 700 pounds was trimmed off the truck's weight. We've already heard that General Motors is working with a similar plan for its next-generation fullsize trucks. Beyond that, expect the smaller 5.3-liter V8 to ditch its six-speed automatic transmission in favor of the eight-speed unit that's already mated to the larger, 6.2-liter V8. Neither transmission will stick around very long, as the trucks will likely adopt a 10-speed automatic around 2017. Look for the updated Silverado to debut later this year, likely as a 2016.5 model.