You can have cars in the game even if it's not open world we have it in Sims 2 where Sims got in the car and drove down the street, Sims Bustin Out was on console you saw the Sims get into the car and it was a loading screen, Sims Urbz on console had motorcycles all they was run up and down the alley way. Sims 4 don't have roads doesn't mean we can't have cars because it's not open world to me Sims 4 is more open then Sims 2 was so I think cars can work since I feel like the neighborhood is open Im suggesting have more gameplay with cars like washing, putting gas, installing an alarm system, upgrade, have an active mechanic career, car jobs like uber, or food delivery. All Sims have a driver's license lol.