I was insightfull enough to predict early enough that I'll need some quantity of vehicles for the backgrounds, to be parked on the streets. By that time I knew I'll make the streets in forced perspective, so they better be in different sizes. I've started to produce quite a number of different oldtimer vehicles, in no exact size. I believe there's thousands of car (or truck) models around, from original toys of the era to 3D designs. Moreover, old cars and trucks are quite popular in hot-rod scene, so I had to be somewhat disciplined in my designs. I wanted the look and the feel of original (tin or cast, or slush, or plastic, even wood) toys, but of no particular design or mark, and especially not newly made cheezy chinese replicas. So, I started to collect parts, mostly in plastic (but in other materials too): this one for the fender, that one for the hood, and that another for the roof. But they rarely fit together, so I've let the parts to guide me and used them as inspiration for my designs. I've built and drawn around the parts, and came to a big number of potential models. A number too big to produce from start to finish every of the designs I've put on the paper. I had to discard similar designs in similar sizes, so I had to enlist them on different charts: one for cars, one for trucks and pick-ups, another for busses, and so on. Also, I had to avoid similar designs in similar paint-shemes. Hence this color-chart of half-finished models (but "finished" in drawing):

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