Propeller or jet to push an in-line skater?

On Jul 22, 9:31*am, Dean wrote:
...

The whole concept sounds like a qualification entry for a Darwin
Award.

Dean

The perpetrator of the car embedded in the cliff posted the full story
once on rec.crafts.metalworking. No one was injured, the rocket car
was rolling unmanned down an old mining railroad at maybe 60 MPH and
when their crude brakes failed it slid into the tunnel entrance, which
collapsed on it. The skid marks at the corner are from when they
bugged out afterwards, they are actually from driving full-throttle
onto the pavement from the sand. They had plowed the sand off the
tracks and it probably blew back and hid them before the wrecker
arrived.

jsw