If less is more, the Porsche 911R might be everything. The German automaker took the 4-liter engine from the GT3 RS and matched it to a six-speed manual transmission. It threw out the back seats and air conditioner, and used carbon fiber to bring the car's weight down to just over 3,000 pounds. The result is a $184,900 car that will go to 60 mph in 3.7 seconds and likely be an absolute thrill to drive