CNN has an article about a rocket scientist named Tim Pickens, who strapped a rocket engine onto a bike, enabling him to go 0 to 60 mph in 5 seconds (which would beat a Porsche in a drag race).  Sign me up.  Here's a Discovery Channel video of this happening.  Here's a video of a similar but different rocket bike.  It says it reached 236 km/h, which is about 147 mph.  I don't know if I believe that.  (via Digg) #technology