Looking for the closest thing you can get to a street-legal racing bike? Check out the new BMW S 1000 RR ($TBA; 2010). This nasty new superbike features a water-cooled four-cylinder inline power plant good for 193 hp, factory ABS, an advanced traction control system, an HP Gearshift Assistant for full-power clutchless upshifts, all while weighing just 455.3 pounds with a full tank of gas. The result? The most horsepower and highest power-to-weight ratio of any bike in its class.
With all the attention going to hybrid cars these days, it's easy to overlook some of the other modes of transportation out there, and some of them are even more economical. The Zero S ($9,950) is a fully electric motorcycle with all of the speed and performance of a gas-powered bike. Designed to be both aggressive on the road and kind to the environment, the Zero S is highly responsive, built by hand from aircraft grade aluminum and powered by the Z-Force, a lithium ion battery that reaches a full charge in under 4 hours. Pushing 31 horses, this bike can go from 0-30 in under 2 seconds, similar to a 250cc gas powered motorcycle, but costs only $0.01/mile to operate. That's what we call efficiency.
If Patton had designed motorcycles, he'd have built the Royal Enfield Bullet 500 Millitary ($5,545). A favorite among military enthusiasts the world over, the Bullet 500 is an eye-catching ride. And although it looks like something that rolled out of World War II, it handles just like a modern bike and has all the modern amenities, like a highly-tuned engine that has 23 BHP at 5500 RPM. Recent updates include lower emissions and better fuel economy (75 mpg). [Thanks, Ryan]