hmmm...SR's run close together...John's axles are magnetic...magnets would have an equal and opposite reaction on the cars. On one side, it would push the car into the rail requiring less steer, and push the other car off the rail causing instability, given the same side DFW. If it was to push air, (thought about doing this one) it would cause drag on both cars...
The counter would be to run opposite side DFW...
The counter would be to run opposite side DFW...