This is an injection-plastic passenger car kit.
From the Revell website:
The Jinx Express is a rollin' "Fort Knox" from the mind of Tom Daniel and the model makers at Monogram. It has all those "go" details you've come to expect from Tom: zoomie pipes, tinted hood scoop and a big bad engine. But this truck is really a bank. Drop the coins in the top slot and open the combination door at the rear to make a withdrawal. Kit features working combination rear door lock, huge rear slicks, roof mounted rear wing, and soft black tires. Molded in silver and green with chrome plated parts.