he means an electric polisher, about 30€ in argos to buy so dont bother renting. you need one to properly use cutting compound in order to avoid unevenness. use it to cut the paint and then polish it with a good wax and it will be guaranteed to bring the paint like new. keep the cutting compound / polisher away from your lights as it will destroy them. you should also take off the badges from the back and buy new ones. a couple of hours work in total will have the car looking like new