I was wtching a youtube video of constructing nascar, i had no idea all the cars were built to the same design (unlike F1 Cars which have some variation between constructors). The showed the granite base used for setting up the cars alignment and heights just the same as we would for marking out. The rolling road simulator was sunk 10ft into the floor with huge hydraulic cylinders lifting the platform upto floor level, Ive seen smaller flight simulators. The cars during set up spend most of the time with no wheel fitted just clamped and bracketed to jigs (on the huge granite plate) This is some serious precison. I bet the same technology does not go into the tarmac/track, if i find it again i will post it.