Gurley Leep Motor Werks

Two years ago, Audi unveiled its pure-electric E-Tron concept at the Frankfurt Motor Show. When the concept showed up again last year at the North American International Auto Show and Le Mans, we started thinking they might just be serious about bringing the car to production.

Turns out...we were right. Audi has recently verified their plans to push the concept toward the assembly line. And, if everything goes according to schedule, the R8 E-Tron…

In the U.S., Mercedes-Benz currently offers diesel vehicles in its E-, M-, GL-, and R-class models. And, they have an S-class on the way. Powered by the same 3.0-liter turbo-diesel V-6 engine as the company's other American diesel models, the new S350 BlueTec will be offered exclusively with 4Matic all-wheel drive; and it's expected to arrive this fall.

Mercedes-Benz's plan to introduce more diesels into the U.S. market doesn…