Mutiny on the Buses (1972)
Bus driver Stan Butler's plans to marry Suzy send shockwaves through her family, particularly her mother, son-in-law Arthur, and sister Olive, who worry about their finances without his income. When Arthur is unexpectedly fired, Stan postpones the wedding and devises a plan: he teaches Arthur to drive a bus. Surprisingly, Arthur succeeds and lands a job. Taking it a step further, Stan coerces the Depot Manager into letting him drive a profitable Special Tours Bus. However, his scheme hits a snag during a trial run at the Windsor Safari Park, leading to unforeseen chaos.
