I downloaded a L4D2 map, converted for gmod, and everything was okay. No errors or texture fail. I wanted to recreate how the city was before the infection, so I added npccitizen's around the map, and started patrolling 'em. (With gmod and helping with the console.) The starting of the Dark Carnival Highway, in my map is cleaned, so I wanted to add moving traffic. I tried to use sliders, but the road wasn't appropiate for, and the car bugged. I tried with winch, but it was too fast for the car, and crash (The car.). I also tried with thrusters, but the car, crash and rolls. Even, if the thrustered car works good, when it arrives to the end, it stays. And what I want to do, is that a car spawns from a point, and when it arrives to another, respawns again on the begging, doing as this a traffic road. I tried creating a Functracktrain with no model from gmod console, and then change its model to a car one, with model manipulator, but the game crashed, because the train had no track. There is a map that has the exactly traffic I mean, it's dmbridge, for HL2:DM. I can't edit the map from hammer, because I only have the .bsp file. Is there a way to create a moving, propphysics, propdynamic, or any other visible entity, that spawns from a point, and travels to another, that makes it spawn on the first one? I hope you know what I mean. Another way I tried, was with vehicles, propvehiclejeep, and make it throttle to the end, but it crashes anyway because it has no npcdriver. Is there also a way to make an npc_driver, drive a car, around waypoints, in-game?