Here are some fantasy cars (if you see a replica, let me know !) from my brand, B-Motors : For all your smooth ride needs, the Faste, a 50's luxury sedan, powered by a powerful v16, producing 415 hp, 4WD, for 3574 kg. The Coupé, a 40's sports car, featuring a 1718 hp v16, AWD (for drivability needs), for 2295 kg.
Lol, in the 1940s, you'd be lucky to get over 300hp, unless if you use a Merlin or some tank engine and tweak the heck out of it.