No, it's not a Merlin. Even though Packard produced Rolls-Royce Merlins under licence during the Second World War Two, the 4M-2500 is an altogether different kettle of fish. It was designed before the ...

The outbreak of WWII meant that Detroit built its last civilian cars in the early months of 1942 -- and by the end of that year, its factories had been converted to the production of wartime material.