Yes, It was an SCCA event. It was done by the local club that I am a part of, SASCA (or San Antonio Sports Car Association). It was held at the local drag racing strip. We use their staging lanes as a parking area, and race on their parking area. It is a huge lot with lots of potential.
Yes, you can go with trucks. There is a guy who is local who drives an S-10 every now and then, but he has a corvette engine dropped into it and one heck of a suspention job done. VERY fast truck. In College Station, they have a truck class that they run so people can run whatever they want in it. They get everything I hear from rangers to 3500's.
Anyone in the area of texas needs to show up to one of these and at least tell me how much I suck at it. We have a site for the local club at
www.conehunter.com . The schedule and maps to the place is on there, along with links to other clubs.