Audi eTron Concept 2009:

Audi e-tron Concept, a high-performance sports car with a purely electric drive system. Four motors - two each at the front and rear axles - drive the wheels, making the concept car a true Quattro. Producing 230 kW and 4,500 Nm of torque, the two-seater accelerates from 0 to 100 km/h in 4.8 seconds, and from 60 to 120 km/h in 4.1 seconds.

The eTron concept uses water-cooled lithium ion batteries to reduce weight and increase power, while aerodynamics, weight, and rolling resistance were engineered from the ground up to work with the new electronic system. The car also has something called "car to x communications," which allows the sensors and systems to interact with, say, traffic lights to determine the best driving strategy. That may be even more futuristic than Jeff Daniels' Tron suit.

Audi eTron concept:

·         313 hp (230 kW)

·         3300 lb-ft of torque

·         0-62 mph in 4.8 seconds

·         150-mile range