Some personal favorites:
The chain-drive horseless carriage from 1906, that I watched the owner prime and start with a crank starter. It had a lever-steering mechanism!
The 1921 Pierce Arrow, in midnight blue. Ultimate sexy ride!
The 1904 chainless bicycle, which used a drive shaft.
Model A race cars.
1933 Auburn town car.
Various utility vehicles from the 1920s.
The multiple-bench-seat wood-framed Depot Hack, 1911, I think.
1924 Ford Taxicab
1928 Austin, with a fighting rooster radiator cap!
Race car (can't recall the make) from the 1911 Indy 500.
We stopped and got some BBQ ribs at the market next to the park, afterward, and sat and watched amazing cars pull out, stopping at the stop light next to us, as we ate.
I don't think we saw everything. I think there were over 100 cars, and some were pulling out before we got to them.