CHiPs (1977)

S2E18 Rally 'Round the Bank

A string of heists at drive-in bank windows is causing major headaches for the CHP, particularly for Jon and Ponch, who have failed to catch the bandit in three separate pursuits. The crooks are now blending in with a 150-car road rally, making it difficult for the police to track them down. In the midst of the chaos, Ponch receives an unexpected visit from his mother, who is tight-lipped about the purpose of her trip.