If we ever build a new expedition camper, we would also put in a bed in like this. Gives you so much extra space. But seriously don't install a lavatory sink, most of the time your kitchen sink is just a few steps away.
Smart car owners, though, won't have none of it. They're a bunch of resilient, innovative people who found ways to make their smart cars keep up with the big boys in the automotive industry. Hence, triggering the smart car's evolution.