Here is a GMC Astro 95 for maximum overdrive. I can't think of any other vehicles that can be found for this movie (that are clear enough to make out what they are).
Gmc Astro 95 * 01:23:20

Isn't there a better view of that one?

no, this is the only time they show it. why, because the peple are in front of the grill? Also I guess I was wrong when i said there aren't anymore vehicles.
Pontiac? * 00:32:18

Mack 01:20:07 *

Mack 2 01:20:57 *

truck 01:25:33 *

And A WHOLE BUNCH OF MACK"S!! 01:21:03

Thanks, I'm adding these

The white Mack was already listed there:
http://www.imcdb.org/vehicle_21555-Mack-Cruiseliner-1984.html
and the white other one seems similar too