[MrBuddyCasino]

One big reason why cars look similar and alike are regulations. This is also a reason why SUVs get bigger and bigger - 2nd order effects of coupling permitted mileage to vehicle area. I'm wondering whether we'll get rid of obsolete regulations once cars are majority electric and have working accident-avoidance algorithms. I suspect not.

[micromacrofoot]

Also just the reality of assembly lines. They prefer parts that can work on multiple models, fit existing machinery/process/chassis, etc... concept cars are one-off hand-built showpieces.