Infiniti

This luxury sport sedan combines 36 highway mpg with a rollicking 360 horses from a 3.5-liter V-6 and electric motor. The Q50 also brings the world's first full steer-by-wire system, which eliminates any mechanical connection between the steering wheel and turning wheels. That minimizes road vibration and allows sensors to actively center the vehicle in its lane. It feels pretty natural, too: Most drivers would never know they're twiddling the equivalent of a video-game wheel. [Q50 Hybrid $43,950 (Q50 Hybrid)/$48,150 (Q50S Hybrid AWD); infiniti.com]