During this time, Cadillac was among the earliest U.S. makers to offer an automatic transmission (the Hydramatic in 1941), but Packard caught up with the Ultramatic, offered on top models in 1949 and all models from 1950 onward.
In acest timp, Cadillac a fost printre cei mai vechi producatori americani care au oferit o transmisie automata (Hydramatic in 1941), dar Packard a preluat Ultramatic oferit pe modele in 1949 si toate modelele din 1950.