What's frustrating about that is we now have alternatives to 100LL, and it still hasn't been phased out.
While expensive and would likelu make a lot of people really angry - regulators should have mandated that any non-diesal or non-turbine aircraft get scrapped. I would believe those fuel alternatives would have been found much quicker and be in use much earlier.
Oh shit you're right. My brain just full on ignored that I guess, than you!