Pretty cool, but the bus freaks out and breaks whenever I import it as a phunlet into anything else. It seems to be something with the fixations on the back tire. If I delete them all, it doesn't explode, but it doesn't really drive well with a floppy tire.
The "you can't do any better, so you can't criticize me" thing doesn't work. You can still have an opinion on something whether you can actually do it or not.
It leans forward when you go forward, which is just weird. The front suspension gets all messed up really easily. It's too easy to rotate it in the air, which also makes it impossible to get up a bumpy hill without correcting its orientation every second (unless maybe you went really slow, but that's boring). It can go way too fast.
Just a few possibilities for why it was downvoted.