Well, it's called go turbine. The reason the recreational side of GA is dying is in part to having to spend twice as much for effectively what 87 UL can provide, only because 20% of the fleet that's not recreational is 80% of the 100LL market. They're holding recreational GA hostage. Even the ethanol concern is overstated. Of course in this litigious society, no one can be allowed to exercise the discretion of NOT parking the ol C-172 with two tankfuls of 87UL for six months then take it up for a spin with so much as sumping the tanks. That would be too much to ask, which is why the FAA doesn;t allow me to run ethanol blend, though when I run it in the experimental (and the certified...) it runs fine. And if your engine is normally aspirated you simply ain't gonna get too high for mogas vapor pressures to be an issue.

You want a resurgence in GA traffic? Make mogas widely available at the ramp where customers can get it...for $3.67. "Special 94UL" for $5.95 ain't gonna fix the problem either.