[GarrisonPrime]

Good point. But if autonomous vehicle fleets arrive I suspect that will no longer be as true.

As more and more people decide to forgo owning a vehicle and just summon autos as needed, the market demand for a variety of different makes and models will decrease considerably. And autonomous fleets will likely want to standardize as much as possible, to make repairs simple and cheap. Ultimately only a fraction of designs may be needed of those on offer today, and the more standardized the options the more likely those will become automated.