Sounds like a big fat lawsuit waiting to happen to me.
It's hard enough to keep out of hot water when you lock clients OUT of the garage. Now they will be under their cars on your property... using your tools... under the guidence of your master tech. Seems they can screw you from EVERY angle when the jack slips and their leg gets cut off.
Sounds like a fun idea... just make sure you spend some time with a good lawyer to review your business plan before investing. CYA !
RIDERS - Just a bunch of guys that wanna go riding !