Hi All
Some years back a couple of mountain bikers rode down "Downhill Racer" a serious peak district climb. Well I guess they plummeted actually.

Mind for real "umm why?" we need loom no further than Shaun Baker - holder of a number of world records - including greatest waterfall freefall in a canoe (17.9 metre vertical drop), and 62.95kph in a kayak on snow... still from a video clip that i have fouled up the link to

Or even a jet powered kayak - as seen on Top Gear

R