text: One of the biggest concerns about driveless cars is that they're really expensive baecause they have many expensive sensors;sensors on the left rear wheel, a rotating sensor on the roof, a video camara mounted near the rearview mirror, four automotive radar sensors and a GPS. imagine how much all of these things could cost? very expensive and what if one day you wake up and the car doesnt work? imagine how expesive it is going to be to fix it.