Chances are, if you’re a green car blogs reader, you’ve heard of the Automotive X-Prize. I know I’ve been hearing about it for what seems like forever, as teams entered or dropped out of this contest to achieve a feasible 100 mpg car. The ultimate prize? $5 million. That is a lot of scratch. The field of contestants has been whittle down over the years, from over 100 entries down to just two left in the mainstream class.

Both entries are from the Edison2 team, differing versions of their Very Light Car. They have survived slaloms, high speed tests, and a slew of other obstacles to get this far. They still have a long way to go to get 100 mpg as the final slew of tests for the Automotive X-Prize kick into gear this week.