In my opinion, the best of the U.S. made rubber toy cars and trucks were made in the 1930s, but there is one standout exception: Garrett Sales. These large, heavy, well-detailed toys had the color mixed into the rubber to prevent fading, scratch-through, and chipping. The problem earlier rubber toys had with hardening over time was avoided by an additive that kept the rubber elastic.
This would actually be a more competitive car if it had not been painted, indeed buried within a detail-blurring re-paint job. Auburn toys originally all were dip-painted with vegetable dye and had a soft gleam that is beautiful as it ages. The original paint job had to take a real beating because kids in the Depression, like all kids once did, loved their toy vehicles and put them to hard use. Really hard use. You should see the beating rubber toy cars' paint has taken and still managed to be appealing in its genteel decline. At worst, it holds up with the best.