OK, maybe you've seen this thing before, but when I stumbled on it I thought I'd share just in case! It's dang cool!
I've seen one 3 wheeler (can't recall who makes that one now) actually out on the highway where I live. The scary part was that the thing was so low that I could see some guy in a cage running into or over it.
In any case, you have to love the way the wheels are designed!