[herr_oberst]

Great interview. I like the thumbnail - one of his experiments, like the streamliner and the sidewinder that weren't as successful as his rear engine transformation. (Fun fact, the same guy that designed and built the famous Moon streamliner body also built the body for Big Daddy's streamliner - Bodies by Jocko)
One thing he tried to innovate was the size of the front wheels so the timing beams would break quicker at the launch. At one point he had what were essentially vee-belts on cart wheels. I don't think the sanctioning body was ever going to let that become a thing.
Then there's that famous blowover where he's in the spoon car. (Maybe he talked about it in the OP interview, I saw that a while back and I can't remember all the stuff that was brought up.)