I guess it depends on the production company, a major will pay big $$ plus any damage will be WELL taken care of. Half a$$ production companies will be like dropping the soap in prison so watch yourself and it would be a very good idea to do a video of your car prior to the rental start.
Years ago they used my doorway, exterior shot only, for a Remmington Steel episode and I got $1K out of it, they were in and out in about 3 hours total.
While on the subject I came across something real cool, an extension off IMDB which is for cars used in movies, check it out:
http://imcdb.org/vehicles.php?make=A...elInclModel=on