06-20-2014, 07:04 AM
Steve, the Air Force One system uses the coach air, but is independent from that system in the event of a break away. Their ad says they have the only system that does this and is DOT approved for this reason. It is a proportional system. I suggest you Google SMI Air Force One for more details. It is not the cheapest though.
2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica