(http://assets.cgsociety.org/nvart/413772_1273852865/1024bound)For the whole pic (car and background) I only used Photoshop, no 3D program.
In this car works a wheel hub motor. The steering is a hydraulic system with a safety gadget, e.g. against rocks. There are seperate cells to preventive a communication between the prisoners. Between the cells is a small hallway for the policeman who can check and look in every cell.