07 Frontier Temperature Climate Control Ac Heat Unit Panel Switch 12r509 on 2040-parts.com

One Lap of the Web: Kyle Busch takes to the streets, a new Mazdaspeed3 and the Crazy Cart

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- When you let a NASCAR driver take his souped-up track car on local streets, you can be sure that what will happen is nothing short of incredible.

Nissan Mixim concept

The Nissan Mixim concept car is a compact vehicle for young drivers who are mostly engaged by their computer and the world via the internet -  and it's a new step toward the Japanese company becoming greener. The design incorporates styling features not often seen in electric vehicles, including gullwing doors in a svelte coupe shape. Its wraparound windscreen, inspired by the visor of a crash helmet, dominates the profile while the swept back windscreen, flowing roofline and sharply truncated rear hints at sporting performance.

Mercedes Ener-G-Force concept (2012) first pictures

Mercedes' latest concept car is, in its own words, 'pure, rendered science fiction'. This is the new Ener-G-Force, a one-off model depicting a civilian version of a futuristic police car. It's a product of the 2012 Los Angeles Design Challenge, which briefed manufacturers to dream up their vision for a highway patrol vehicle fit for the year 2025.