Cadillac Model K 10hp

Three Cadillac cars were completed in time for the New York Auto Show staged in January, 1903. All three cars were sold at the show and by mid-week orders had been taken for 2,286 further units, each one requiring a deposit of $10.

Throughout 1903, 2,497 units were built. Production began in March 1903 and output totalled 1,895 units from March 1903 to March 1904. The 2-seater runabout cost $750; an optional rear entrance detachable tonneau cost $100 and doubled the occupant capacity. It was bolted on the chassis and could be lifted without removing disconnecting any plumbing or wiring.

Cadillacs of 1903 sometimes are identified erroneously as the Model A; in fact, they were known simply as the "Cadillac Runabout" and the "Cadillac Tonneau". When a new Cadillac was introduced in 1904, it was designated the "Model B"; meanwhile, production of the earlier runabout and tonneau models continued through a second year. Only at that time did Cadillac began to designate them as Model A cars to distinguish them from the new, 1904 models.

These Cadillac cars ran on a 72 in (1829 mm) wheelbase.