To use the cars you need to turn the game on. The game is on when the two poles in the center start arcing electricity between them. In order to turn it on you have to press E on the console located on the catwalk opposite the one with the colored squares. Then to enter a car you step onto the middle of a colored square. Look directly forward towards the other catwalk, dont face down or up, and press E. You should be controlling a car now. You can look around now but you wont be able to move unless you face directly forward and press E again.

how to get under the tower please tell me i tried everything on the map but i dont know how there is one command to see hidden vents or troughable walls but i dont know it anymore please tell me PRivate or somethnig thanks