The generator hadn't been run at this show. The truck had been plugged in but the engine was running as they did final is everything put away checks. Then when the driver started going through the gears, slight haze out of all 4 stacks. The pusher axle does steer. Just like an Ohio dump truck. Castor steer by the way, not forced like a twin steer. It wouldn't work very well if it were a fixed axle. Mounted what, like 15' behind the steer if it didn't steer tire life would be very short. I don't even want to think about what it would do to the wheel bearings and mounts-for that matter the frame itself.