It's an astonishing amount of work, and according to google translate, still 90cc.
"This is a modified 2-stroke 90cc para-twin Yamaha HS1. It looks like the cowl is also coming out. 2021 Taste of Tsukuba It was displayed as an OSR-CDI demo car at the autumn Taste of Tsukuba swap meet venue."
Now that is original. Weird but I just can't stop looking at it. Was hoping they would've cut the music and just fired it up.