what is the worst mistake your mechanic done to your car ?

[guidedog]

the last one was no split pin in front wheel bearing in a front wheel drive car ,and wheel just about fell of traveling at 100 klm down the highway .car just pulled hard to the left ,lucky i stopped it in time before it fell of or car may have rolled over if wheel had fallen of and front end dug into road. reply i got sorry mate .and thats all ,someone could have died ?