wow, i saw this at el mirage last weekend... i'm guessing it has three wheels in front because it's one-wheel, rear-wheel-steering in the back.
my friends and i were discussing it because we'd always heard that rear-wheel steering didn't work too well for lsr, but, since the title of this post includes the words 'chet herbert', i'll assume it could work.
the pictures don't really show how radical this thing is... there's no other current vehicle remotely like it. you could practically hear jaws dropping when they rolled it into inspection.
good luck!
rd