2015 Porsche 918 Spyder

Making its world debut at the Frankfurt show is this super sports car with a plug-in hybrid that really raises the bar as a technological benchmark for Porsche -- and cars in general. Why's that? It offers 887-hp, goes 0 to 60 in less than 2.8 seconds and supposedly gets ... wait for it ... 94 mpg. Yep. It's also going for $845,000 -- so prepare to pony up for this car-cum-jet-propulsion device.

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