You really need the mind of a Swiss engineer to come up with a vehicle that combines the lithe maneuverability of a motorcycle with the not-getting-rained-on-ability of a conventional automobile. In addition to looking as though it just fell out of a time machine from a distant and much cooler future, the MonoTracer furnishes its driver (and one passenger) with such luxuries as air-conditioning and windshield wipers, plus the safety of a cockpit made from Kevlar and carbon fiber and reinforced with an aluminum roll cage. The MonoTracer is also energy-efficient: its BMW engine, which goes from zero to 62 m.p.h. in 4.8 sec. (100 km/h), gets about 65 m.p.g. (28 km/L).