That looks like a modern version of the old Messerschmitt KR-175/KR-200 of the mid 1950s through the mid 1960s. Even back then with there two stroke engines they could do 60 to 90 MPG. I think if I was going to compete for the X prize I would use the 1000cc hybrid Insight sip sip engine instead of a 1500cc zoom zoom engine. Just today I logged a 100+ MPG tank on my stock Insight. A car like the "ale" with Insight power ought to be able to do much better then a stock Insight.....Louis