My son and I have been watching youtube vids of RC HEMTT's. From what I gather, no one makes these for sale? It seems like anyone who has one, has spent a year or two building it from scratch or something. Some of them have the sound of a diesel engine running and air bleeding from the brakes when stopping and starting again. Has any RC modeling company gotten their gear together by offering one of these for sale, or does one have to spend years and thousands of dollars figuring out how to build complet suspension systems, custome parts mold making, etc. to get into one of these buggers? I've "googled" google to death and find nothing but mostly videos posted by people of these RC's running. It's almost like there's a secret society that is willing to show these machines running, but no information about the skunk-works that makes them!!! 
Any help would really be appreciated! TIA
Any help would really be appreciated! TIA