That’s awesome! I wanted to build a go-kart for my son a few Christmases ago and I stumbled onto the PlyFly. I emailed them to see if they’d sell me the DXF files to cut myself, but I never got a response. I didn’t want a gas-powered kart for my then 3 year old, so I referenced their design for parts, but basically ended up designing my own to run off a drill. It worked, but my poorly thought out drive train (drill with wooden gear chucked sitting right on another wooden gear on the back wheel) failed almost instantly. I was able to get it working and the boy enjoyed for about a month, but the wooden gears constantly needed to be replaced and I got tired of fixing it.
I’d love to take another stab at it once your plans are done.
