I have a video playing in the background with AOPA's Craig Fuller. Part of the discussion is the continued work toward unleaded Avgas. Being a carguy, I remember the angst when the change came for cars, especially high performance types. Are the same problems that faced car owners of leaded gas engines pretty much the same problems that GA faces with their aircraft? I've read a couple of articles dealing with research going on to find the proper "mix" to get GA aircraft off leaded gas and onto unleaded. Lead does a lot of good things for an engine, but not so much for air quaility. Any comments or added information?

Thanks!

David