Fisker Karma vs. Tesla Model S

Fortune's Sue Callaway puts these two alternative vehicles through their paces to find out which upstart American car company has the best cutting edge electric technology.

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Take a ride on a real Tron bike
Parker Brothers Concepts in Melbourne, Fla., have developed a futuristic, street-legal motorcycle that reaches speeds of 100 mph and can travel up to 80 miles on its 100% electric engine.





Tesla Model S: Test drive D.C. to Boston
CNNMoney took a Tesla Model S on a test drive from Washington D.C. to Boston. The all-electric car drove 450 miles with two stops to recharge at Tesla's Supercharger stations in Delaware and Connecticut.





Our Tesla S made it from D.C. to Boston
CNNMoney drove a Tesla Model S from Washington, D.C. to Boston, recharging it twice at the Supercharger stations in Delaware and Connecticut.





The car collector's ultimate garage
You won't find an auto worth less than $250,000 in Barrett-Jackson CEO Craig Jackson's dream garage.




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