A.S.
When we buy from CL we do LOCAL TRANSACTIONS ONLY, and we only accept (or pay) cash.
We have not had any luck trying to find a used car that way (CL). It seems like most of the listings are small-time dealers (ugh) or scams.
We have lost a couple of deals, too, on cars from CL after pulling the Carfax history.
My husband did sell an automobile on CL so there are regular people out there selling too (and his went quickly - no wonder after we saw how difficult it was to buy that way).
Good luck and be careful.