Failure Number One: Failed to allow for SHT. (Stupid Human Tricks)
Failure Two: Physics 101... The kinetic energy contained in a "large" mass moving...
Failure Three: Chemistry 101... The energy contained in cells (a "battery"), released "all at once".
This despite decades and centuries of injuries and deaths trying to "perfect" the horseless carriage ("car").
SHT. Keeps happening. It's inevitable. Simple solution? Shrink the size and weight and speed of the vehicle (see "ebikes").
EDIT: Watts worse than SHT? Doctors will confirm that half the worlds human population will have less than "average intelligence". And inflict their SHT on others.
ES changed my life (for the waaaaay better).
Eff. June, 2014 Phoenix Ebike Promotions
(Current ride? High speed lawn chair.)
Phoenix Ebike Promotions conversion kit (work in progress. More drink holders, etc etc)
Joined yer local chapter of EA yet?
(Ebikers Anonymous - Where we're all miserable failures, but the parties are hilarious...)