The Mercedes SLS AMG is already a fast, powerful car but this version takes things a bit farther. It's lighter and -- with 622 horsepower from its 6.3-liter V8 -- even quicker to take off. It can get from a stop to 60 miles an hour in just 3.5 seconds, according to Mercedes. It will go on sale in the summer.
The 575-hp Shelby Raptor has monster performance and rugged off-road capability, making it a pick-up truck for the not-so-faint-of-heart.
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