there is a list of cars used in movies on imdb site, if yo uwant to search through them it is a poor site for anything but the photos of each make and model no real search engine, but it is fun to look at, the movie dazed and confused has many websites that i am sure give the location of the cars currently, go to the links section,
http://www.dazed-and-confused.net/mail.html
this other site is the builder and movie guy page,
has some info on a few cars
http://www.dazed-and-confused.net/reid.html