There were many projects for future reference that had to be laid aside for the war effort. Once the war was over, Checker was ready to resume its manufacturing of taxicabs. Checker might have been way ahead of the times if the Model "B" series would have ever gotten off the ground. It was a rear engine, rear-wheel drive vehicle. There were only two built and were still being tested by the end of 1945. Not much information exists except they were not accepted well in the cab industry.

The Model ''C'' never got off the drawing boards, and was over-shadowed by the Model ''D''. This car took to the road in 1946 and looked like nothing else in the industry. There were big plans for this model. Fourteen different versions, to be exact. Some of them were to include a coupe, convertible, ambulance, pick-up, and panel trucks. The most unique feature was the front wheel drive and a cross-mounted six-cylinder engine. This whole project was kept fairly quiet and little was known about the car outside of Checker.

There were many problems, mostly with the front-wheel drive unit. The production would have had to be completely changed for one. There was a great need for new cabs after the war, and Checker felt the time involved for changeover would tax them too heavily. The decision was made to go back to the more conventional Model ''A''. They combined the pre-war car with the New Model "D" designs and came out with the Model A2 in February of 1947. This car stayed around until the end of 1955.