Commander Caractacus Pott is an inventor who buys and renovates an old car after gaining money from inventing and selling whistle-like sweets to Lord Skrumshus, the wealthy owner of a local confectionery factory. The car, a "Paragon Panther", was the sole production of the Paragon motor-car company before it went bankrupt. It is a four-seat touring car with an enormous bonnet, or hood. After the restoration is complete, the car is named for the noises made by its starter motor and the characteristic two loud backfires it makes when it starts.