Nah, that's just boring. Go with a diesel Insight. There have been a few diesel swaps on the 1st gen Insights that manage the same or better fuel economy than

Nah, that's just boring. Go with a diesel Insight. There have been a few diesel swaps on the 1st gen Insights that manage the same or better fuel economy than the gas hybrid version. https://www.thedrive.com/news/38291/this-2000-honda-insight-with-a-vw-turbo-diesel-swap-may-be-the-ultimate-fuel-saver https://www.thedrive.com/news/38291/this-2000-honda-insight-... The Honda hybrid tech of that time is a lot easier to swap engines on. A Prius has the motors in the transmission, so it's harder to simply bolt a new engine on. You'd have to either drive the transaxle with your own control algorithms, or figure out another way to make it behave with a different engine. The Honda electric motor was on the engine crankshaft, and you could get the Insight with a manual transmission, so it's really just "bolt in the motor and go."