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2017 Audi A4 evolves into a larger, lighter luxury sedan [w/video]

Audi took the evolutionary, rather than revolutionary, approach when it came time to redesign the brand's A4. While the latest generation's look might not set hearts racing, a plethora of tiny tweaks by the engineers manage to make the the four-door larger, up to 264 pounds lighter, and slice the drag coefficient down to 0.23. Audi has made its modern reputation on the style and quality of its interiors, and the new A4 seems to make good on that tradition. In-cabin appointments and tech see a serious upgrade, including offering Audi's fully digital, Virtual Cockpit, instrument panel. In the US, the new A4 arrives for the 2017 model year offering power from either diesel or gasoline. The 2.0-liter TDI is essentially a carryover from the Audi lineup, but the 2.0-liter TFSI sees some big upgrades, including a new cylinder head. It's now rated at 252 horsepower and 273 pound-feet of torque. At launch here, all A4s get a seven-speed S-tronic dual-clutch gearbox. Front-wheel drive and Quattro all-wheel drive are available. For an added dose of forbidden fruit, you can check out the crimson A4 Avant in the gallery above the from Frankfurt Motor Show. Take a good look because this long-roof variant isn't coming to the US. Yes, we're listening to sad violin music, too. Although, the next Allroad is coming here eventually after that higher-riding wagon debuts.

2017 Frankfurt Motor Show | Observations on the Ferrari Portofino, Honda Urban EV and more

Related: We obsessively covered the Frankfurt Motor Show — here's our complete coverage The 2017 Frankfurt Motor Show kicked off the fall reveal season with an impressive array of powerful cars blended with forward-looking concepts. It's a seminal period for automakers, who find themselves at the intersection of disruption and opportunity. With that in mind, here are four takeaways from Frankfurt. The transformation of the curvy yet overbaked Ferrari California T into the Portofino is complete, and its coming-out party in Frankfurt served notice that Ferrari's entry-level sports car is much more formidable. There was nothing wrong with the California (and later the California T), but the Portofino features a cleaner look with stronger lines and an elegant resemblance to the rest of the Ferrari family. The California name is a good one. Used on a number of memorable cars in the 1950s and '60s, it's steeped in tradition, and certainly Ferrari will dust it off again. But switching to Portofino, the name of a scenic town in Italy, is a nice way to change the conversation and generate fresh interest in this part of the Ferrari portfolio. Man, people are stoked over the Honda Urban EV concept. Why? I assume it's the retro look that harks back to early Civics, and the lack of information about the concept itself. What people don't know, they're imagining. Honda hasn't even confirmed the range, the car is very small, and it likely won't be sold in the United States. With this dearth of facts, enthusiasts are filling in their own blanks. I guess that's OK. Count me among the intrigued. When I saw pictures of this thing early Tuesday morning, I was pretty excited, too. We do know Honda is expanding its electric strategy, and two-thirds of its new vehicles sold around the world will have some form of electrification by 2030. The Urban EV launches in Europe in 2019, and a hybrid CR-V rolls out in Europe next year. Unconfirmed for the U.S. market, it seems like a no-brainer to bring that version of the CR-V here. The electrification and autonomous tech parade of concepts continues. You gotta be there. It's the cost of doing business in the modern automotive landscape. This technology takes years to develop and launch, so the next best thing to remind the world you're trying to be cutting-edge is to show off lots of fancy concepts. Frankfurt had plenty. A couple standouts: The BMW I Vision Dynamics and Audi's Elaine and Aicon.

The skinny on Delphi's autonomous road trip across the United States [w/videos]

Rolling out of an S-shaped curve along Interstate 95, just past Philadelphia International Airport, the final obstacle between the autonomous car and its place in history appeared on the horizon. So far, the ordinary-looking SUV had traversed the United States without incident. It had gone through tunnels and under overpasses. It circled roundabouts and stopped for traffic lights. Now, on the last day of a scheduled nine-day journey, it was poised to become the first autonomous car ever to complete a coast-to-coast road trip. First, it needed to contend with the Girard Point Bridge. Riding in a rear seat, "I saw that bridge coming, and I thought, 'Oh my gosh, this is going to be a grab-the-wheel moment," said Kathy Winter, vice president of software at Delphi Automotive. The car, an unassuming Audi SQ5 nicknamed Roadrunner, had been well-tested. Back in January, a few inebriated pedestrians fell flat in front of the car during a demonstration in Las Vegas. It was the quintessential worst-case scenario, and the car admirably hit the brakes. More than drunken louts, bridges present a sophisticated challenge for the six radar sensors that feed data to the car's internal processors. Instead of sensing solid objects, radar sensors can read the alternating bursts of steel beams and empty space as conflicting information. "They're a radar engineer's worst nightmare," said Jeff Owens, Delphi's chief technology officer. Girard Point Bridge, a blue skeleton of girded steel that spans the Schuylkill River, might be a bigger challenge than most. Traveling across the lower level of its double decks, the autonomous car's radar sensors had to discern between two full sets of trusses. Cross the Schuylkill, and Delphi's engineers felt confident they'd reach their destination: the New York Auto Show. For now, the sternest test of the trip lay directly in front of them. A Data-Mining Adventure Until that point, the toughest part of the journey had been finding an open gas station in El Paso, TX. Trust in the technology had already been established. The main reason Delphi set out on the cross-country venture with a team of six certified drivers and two support vehicles was to capture reams of data. What better way to do that than dusting off the classic American road trip and dragging it into the 21st century? They did exactly that, capturing three terabytes worth of data across 3,400 miles and 15 states.