woohoo, I made it to Makezine! Thanks to everyone who came to check out my site!
But their caption was only partially true because it confuses 2 of my projects. So just to clarify: I built the go-kart in 5 days, but it uses an off-the-shelf Turnigy motor. However, a few weeks ago I finished a motorized penny farthing called PicoFahrrad, which has a custom hub motor (that was built over much longer than 5 days).
Incidentally, the motor from PicoFahrrad is completely compatible with the little go-kart. But just to be clear, the custom hub motor was not part of the 5 day build. Anyhow, I hope everyone enjoy the projects nonetheless.