Don't think that over twenty cars is a small number; at this time, the overwhelming majority of cars on the road belong to the government. Even if it's a privately repaired vehicle, once it hits the road and is discovered, it must be confiscated for the greater good.
Only a small fraction of people, those with special status, have the right to own private vehicles, and even then, everyone tends to be rather modest.
Basically, nobody chooses sedans or sports cars; most people would pick a cargo truck over a pickup, and take a pickup over an SUV if given the choice.
Zachary got down from the lead car, and as everyone looked at the open fields on either side of the road, they knew they had reached their destination.
To the north of the road lay farmland, already planted with crops, while to the south was a grassy area. Without needing to be told, everyone knew where to go.