The $250,000 car's green bona fides are worked into nearly every inch of its frame. In addition to the carrot-based steering wheel, the wing mirror is made with potato starch, and the body consists of recycled plastic bottles and carbon fiber. The engineers lube the engine with plant oil and coat the radiators with BASF PremAir, which converts ground-level ozone to oxygen. Most of the parts are biodegradable but have been mixed with eco-friendly resins that improve durability. Several auto companies (which Meredith can't yet name) have inquired about the technology, and he looks forward to seeing pros take the wheel. When they do, he's hoping for a track with lots of turns. "It has a huge amount of grip, so it corners incredibly quickly."