Now that i thinkabout it 4 reverse gears are not needed in my preious design if the wheel turning horizontal _ chains are run off of 2 spockets and two globes or windows or something. Instead of the
M more of a
X
This way you have no reverse, except for on all ofthe wheels at the same time, but you can turn the front wheels 90 degrees to the left and the back 90 degrees to the right. It wil created tank type steering and turn your front into the side, until the turn is over and the driver staightens out the wheels to dive again. There is also steering like a car, but better, cause you can turn the back wheels too, which is an option now sometime on the newer models

.