Many comments about auto engines seem to ignore that the three (?) Jet A pistons on the market now are all based on auto engines. Just Say’n.
If it’s true that innovation is being thwarted by certification, would allowing owners to convert their planes to a new class of experimental use be a solution? If the government won’t make compensation, then it seems it should at least make allowances. Changes to the liability situation and/or regulatory regime would likely result in solutions.
Also, I’d really like to hear a reaction to my earlier suggestion that we put an end date on letting new 100LL planes get sold. This is just adding to the problem.