Definition of trap car:
(n) :
(law enforcement) A vehicle used by law enforcement agencies as bait to capture car thieves or thieves who steal items from cars.
(n) :
A passenger vehicle used for drug smuggling, having a sophisticated design that reveals “stash spots” for drugs only when certain functions of the vehicle are performed simultaneously or in sequence.
(n) :
(automotive) A vehicle infused with very dark tints in order to evade capture or scrutiny.
(n) :
(rail transport) A railroad car used for much smaller shipments usually within terminal or city limits.