pumpabike.jpgJohannesburg-based inventor Mike Puzey's new
'Pumpabike' is a human-powered hydrofoil capable of hitting
speeds of up to 30kph. There's only one problem: if you stop
pumping up and down, the entire contraption sinks into the
water. Oh, there's another problem: you can't just get back on
and start pumping. Instead, you must launch from a boat or jetty
to get the necessary initial speed to stay afloat. If you're
willing to deal with those limitations, the Pumpabikes can be
had for between $800 and $1,200, depending on configuration.
(Thanks, Rick!)  UPDATE - Apparently this is a knock-off of the
Trampfoil. Thanks, Kevin  Human-powered hydrofoil seeks jumpy
riders [NewScientist]