Production value?

Rating: 4/10 (31 July 2019)

One of the boys shouted "Production value!" as the train approached. Later on, as they were all making their getaway in the yellow vehicle, the car was bobbing or rocking up and down, as if it was moving. Really? Cars don't move in that manner unless there was a series of speed bumps under its wheels. Production value? Went way down on that alone.