Oh, look! A Dodge Intrepid from episode 2.20:
http://evenstevens.disneytvzone.com/media/evenstevens/gallery/pictures/season2/4- 1-tight_end_in_traction/img124.jpg
http://evenstevens.disneytvzone.com/media/evenstevens/gallery/pictures/season2/4- 1-tight_end_in_traction/img134.jpg

And who's driving it? Why none other than Sarge from CHiPs!
http://evenstevens.disneytvzone.com/media/evenstevens/gallery/pictures/season2/4- 1-tight_end_in_traction/img133.jpg


Back in episode 1.6 you've got a Chevrolet Cavalier, which Louis thinks is going to run over a fellow student:
http://evenstevens.disneytvzone.com/media/evenstevens/gallery/pictures/season1/0- 6-louis_in_the_middle/img098.jpg

More to come!