1984 Honda Atc 200s Three Wheeler: Gas Tank Gas Cap on 2040-parts.com

Optima Sports pushes two new tire innovations

WITH VIDEO -- If John Scott has his way, every car on the road will be shod with tires featuring built-in camber. Scott is the owner of Wisconsin-based Optima Sports, a small automotive-engineering firm, and inventor of Camber Tires--tires with a constantly decreasing diameter. According to Scott, his tires offer multiple benefits, including enhanced handling, increased stability, reduced tread noise, improved fuel economy and better safety by reducing rollovers.

One Lap of the Web: DeLorean engine swaps, 2013 Women's World Car of the Year and the best French cars

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. -- We've driven the new BMW 4-series and found it worthy of being the 3-series coupe's successor.

Jeep concepts headed to Moab Jeep Safari

Jeep and Mopar didn't create the Moab Easter Jeep Safari, but that they're using the occasion to introduce wild concept vehicles and new parts to a crowd of their most rabid fans has become something of a company tradition. Jeep and Mopar previewed six concepts on Tuesday that are destined for the Moab desert. On hand were three customized Wranglers, a Grand Cherokee, a J-12 concept and a Mighty FC concept.