> Outside some hill-climb racing it seems most innovation is explicitly forbidden... Don't forget about land speed racing, which is quickly gaining popularity

> Outside some hill-climb racing it seems most innovation is explicitly forbidden... Don't forget about land speed racing, which is quickly gaining popularity on repurposed air strips. About the only rules are related to safety, though there are various classes with regards to engine size, fuels, induction type (supercharging, etc), body style and such. Here are a dozen examples of innovation: https://www.hotrod.com/articles/12-ways-to-go-fast-in-the-standing-mile/ https://www.hotrod.com/articles/12-ways-to-go-fast-in-the-st...