Entex did a great 1:16 1937 Packard Town car. JoHan made a 1:25 Cadillac Town car,forget year. Monogram did both a %$K and a 500K.
Minicraft made a number of 1:16 cars of 20s-30s, including Jag S100 and MGTC.
I was lucky enough to pick up That Packard last fall at a swap meet at a contest.
They are all out of production, and can only be found on EBay or at swap meets. Aurora made a bunch in 1:16, but they tend to be earlier, teens and twenties but they are nice kits.