The "eco-chic" Fisker Karma and 150mpg XH-150 hybrids revealed
...150mpg plug-in hybrid XH-150 SUV -- that "XH" stands for Extreme Hybrid. Unlike traditional hybrids, the XH-150's powertrain uses ultra-capacitors, not gas, for "fast" acceleration. The XH-150 goes from 0 to 60 in 6.9 seconds with a top highway speed of just 87mph. Instead of bringing the XH-150 to market, however, AFS Trinity is more focused...
