Originally Posted by JW51
Was the GMC kind of an early equivalent of a SWAT-team rig? Or did the bad guys drive it?
The GMC is an armored car. The Chevy is a florist delivery truck. The armored car is robbed by guys driving a duplicate of the florist Chevy, thus placing suspicion on the real florist truck driver.

1959 Chevy Apache Short Bed Step Side
1967 Cadillac DeVille Convertible
1967 Pontiac Firebird Convertible