The real ELI5 answer is that it’s wildly impractical. Imagine you have a typical 4 or 5 seater car but instead the driver is put in the middle. You’re losing either 20 or 25 percent of your seating capacity (because now you can’t have two seats in the front) for no real discernible advantage.
Imagine anyone with a significant other. Literally no one is going to buy a car with one seat in the front and make their spouse/SO sit in the back.
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