Whe I bought my first car, a '66 Olds Starfire (10.25:1 compression), it was 1980, and finding leaded gasoline was hard to find, and premium anything was tough, by '82, the last place I could still get it phased it out. Hypothetically, what if someday, you can no longer buy fuel that will work in old engines? We already have to buy special, hard to find oil and additives (with zinc) to keep out flat tappets alive... There's 10% ethanol in the gas we buy now, which is eating away at our rubber fuel lines and carb seals and parts. What if new formulations of gasoline make it impossible to run in an old engine... Making the cars we love, basically just garage art that takes up a lot of space... Would you keep your hot rod/custom? get out of the hobby? Sell it to a museum? Repower it? This disease isn't going away form me, and I'm 47, so... 20 years? 30 years? 40 years? I'll be 67, 77 and 87 years old. Who am I kidding, I like bacon cheeseburgers too much, I'll be lucky to see 67. But you younger and healthier guys... ?