If you need to get somewhere in a hurry, you might want to consider this 1929 Harley Davidson flat-track racer. While an 82 year old bike might not sound too fast on paper, this one has a couple of juicy upgrades, namely a pair of pulse jet engines strapped to its sides.
Built by jet bike fanatic Robert Maddox for some guy who wanted to try and crack 200-mph, the customer apparently had a brief moment of sanity and backed out of the deal. His loss can be your gain, because the bike is now on Ebay with a insanely low sounding "buy it now" price of $25,000.
By simply showing up with this thing at the local drags, I'm sure you could scare the crap out of the all the kids with their ricers.