I saw it and can't recall the name either. Someone had taped it and I watched the 203 bits twice. There were actually two 203's, the immaculate one used for the shots and an obviously less valuable stand in used when soldiers were smashing the headlamps.
In 1958 my cousin went to Canada Cycle and Motor Company in LaTrobe street to purchase a 403. They had a set of fitted luggage with which they demonstrated the roominess of the boot. It must have been expensive luggage because he bought the car but not the cases. Photographs of the 203 fitted cases always show what appear to be substantial cases which would probably be true if you were a Hobbit.