Ten technologically advanced green cars

It's no secret rising gas prices have consumers searching for more fuel-efficient vehicles that can reduce toxic emissions and pain at the pump.

Take the 1.8-liter, four-cylinder Nissan Versa. Last year its sales jumped 259% from the year before. No wonder: It's got an Environmental Protection Agency (EPA) miles-per-gallon rating of 26 city and 31 highway. The Honda Fit, a similar vehicle with near-identical mileage, was up 101%.

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