http://www.treehugger.com/files/2006/08/the_hybrid_mini.php
High-performance Mini Cooper concept; a 160hp electric motor powers each wheel, and produces power upon braking: “The beauty of this dual-circuit, ultra safe system is that your green conscience can be quite content even when accelerating hard, since you are assured of collecting most of the expended energy when it is time to slow down rapidly.” Really?