Just sitting here thinking that at one of our local tracks, not only is there no tech, but there's not even anyone putting a number on the car. If it can roll into the water box, you're good to go. The timeslip will have the color of your car (where the car number should be) or maybe some other distinguishing feature about your car on it so the guy at the shed at the end of the track knows what timeslip to give you, lol.