When everyone was going hybrid, taking baby-steps toward an alternative-fueled future, Mercedes jumped into its prototype Hydrogen-powered machines and buzzed off toward the horizon. Now, perhaps realizing that it moved a bit too quickly for the distribution infrastructure to keep up, the company seems to be pulling back a bit, introducing the BlueZERO line of autos that all share the same shell -- pictured above looking good at its most flattering angle, but not so hot after the break. The series will encompass three cars: the fully-electric E-CELL (possibly featuring
