clipped from jalopnik.com

BMW says its new Euro Mini D diesel will see the high side of 72.4 mpg, by way of its efficient oil burner paired with hybrid-like technologies. Those include brake-regeneration, which uses an intelligent alternator controller that detaches the generator draw from the engine on acceleration and uses engine spool-down on deceleration to recharge the battery. It also includes (on manual-transmission cars) a stop-start function that kills and restarts the engine rather than idle in neutral. No word on the company's plans for exporting the system, but we'd imagine it's inevitable in the era of $4.00 gas. Screw you, piper. We won't pay! – Mike Spinelli