Like the Doozers themselves, the vehicles are radio controlled, and combined with the movements of the Doozers, create an illusion of teeming industrious life. In the interview footage included on the Fraggle Rock season 1 DVD set, puppet effects designer Faz Fazakas discussed the intricacies of the vehicles, and proudly boasted that astronaut Sally Ride, a friend of writer Jerry Juhl, experimented with the Doozer technology in the pinscher lifter (a vehicle with a mechanized arm similar to that used in space probe machinery) as practice before heading into space.