I took a peek at that website and was amused to see the M1003. I haven't seen that particular truck for what, two hours now? My neighbour Sarge and I were looking at it this afternoon and talking about how much fun its going to be to fix the flat tire so he can take it to the car show on Sunday.
Five or six years ago, he and I made a roadtrip to buy that truck, and drove it from Illinois back to Texas.
Just be warned, those trucks are a
bear to maintain, and most parts have to come from Germany and are NOT cheap! Sarge is a very experienced mechanic, and he just had to have the truck since he drove them in the Air Force while part of the GLCM program (which is what those vehicles were used for in US service). But keeping the thing working drives him to distraction at times.
Something to ponder before jumping into owning one of these trucks.
I stand to be corrected, but as far as I know the M1003 was a test vehicle only, (I'm told perhaps only two were bought?) and did not enter US service. Sarge's is one of the two.
The rest are almost as uncommon, as they saw only very limited US service.
The Pima Air Museum in Tucson has a GLCM display with several of these trucks, including a GLCM launch vehicle which was reportedly specifically named in the INF treaty to allow its preservation as a museum piece. All the rest were destroyed.
Cheers