Hey... my girlfriend has a commute through la traffic that is about 40 miles each way, it takes her an average of one hour. she drives manual transmission toyota of about 1993. she is describing car strangeness that sounds to me like the clutch is wearing out. how does one know when to change the clutch in a car? should she do it before it becomes really bad? i do not want her to be abandoned on a los angeles highway during rush hour! thanks, r.