Let's see: Infant car seat: $100, Reborn doll: $500, having to drag around a baby doll eveywhere you go so that people don't report you for leaving a baby in the car: priceless.
My friend tried this with one of those guys you can put next to you in the car so it looks like you're not driving alone. Some kind of rubber dude with no legs, hat, sunglasses, and chessy mustache. Her mother bought it for her when she drove up from NYC to upstate NY at college. Instead, she used it for the car pool lanes.
Anyway, a cop pulls her over one day and gives her a ticket anyway, even though she explained it wan't for cheating but for safety. The thing had a funny name, can't remember now, though.