State Police are seen northwest of Chicago, Illinois and just to the east of O’Hare Airport in this press photo at a road block on Lawrence Ave. and River Rd. The officers in the photo dated Feb. 16, 1956, were handing out tickets to motorists whose cars were wearing 1955 plates. In less than two hours they had ticketed over forty motorists for having an unregistered vehicle and the woman in what appears to be a 1953 Pontiac convertible was one of them. Photo courtesy of the Benjamin Ames collection (scroll down).
* Update * The general consensus is that the car is a 1950 Pontiac.