Hey HiTech my dad took me and two of my brothers to the dragrace you mentioned that had the army sponsored wheel stander tank "Hell on Wheels". They built it up for a week are longer prior to the race on radio making it sound like the tank was coming to Corpus to whoop up on the local driven Paddy Wagon, well there sure as heck was a a** whooping handed out as the Paddy Wagon won all three of their match races. In the early 70's this area had some of the best wheel standers in the country Paddy Wagon, Rare Bear, Fugititve, Daffy Duck I think I'm forgetting a couple. Besides those two wheel standers racing that day there were jet cars, dragsters and I think some funny cars also I can only remember a couple of them by name the USA-1 & Maxi Taxi were here and pretty sure the Traveling Texan and Green Mamba both raced that day, dad took pictures we had put on slides I will try and hunt them up.