I found out the front can steer alone using clutch/brake method. I paid for the one in Bullhead City, AZ. Now all I have to do is get it home to Iowa. I've arranged with Secure Auto Transport to transport it. Yes, I now know they have a bad reputation. Otherwise I can obtain a trailer and haul it myself. If I take the tracks off, no cargo, and no fuel I'm down to about 4000 lb for both sections combined. Now if I can just find out more about the one in CA.
LeDoyle