Thanks for all the feedback. I'm going to have it towed to my home in Maine. I found a reasonable service that will trailer it to me. I think it will be best if I find someone locally to give me a second opinion.
This is what the service invoice stated:
C/S that the engine was running hot. The temp started to go down when the engine started knocking. As he tried to get off the highway the engine started to lose power.
Oil level is good and looks and smells as though it is in good condition. Drained a small amount of oil off bottom of oil pan found no issues. Normal wear metal. Engine bars over. No coolant in radiator. Pressure test cooling system and found pipe with hole in front of LR tire.
Charged batteries and started unit. Started right up and sounded ok. Started working on repairing cooling leak. Tried to patch the damaged area and in doing so caused another leak less than 1 foot from original area. Need to replace coolant hoses from front of unit to rear. Removed one failed pipe and started installing new hose.
Installed new hoses from engine to rear of unit. Pressure tested cooling system and found no leaks. Drove around yard and found under half throttle engine pops through the intake. Possible burnt valve, blown head gasket, or cracked cylinder head.
Any more thoughts now?