New Ram TRX owners can certainly buy the truck for some fun in the sand or rock crawling. But it has plenty of power to do more than just that. The 702-horsepower super truck also comes equipped with launch control, and Ram lists its Hellcat-powered off-roader as able to do a quarter-mile in 12.9 seconds, reaching 108 mph. That’s almost as good as a Dodge Challenger SRT 392, which is impressive for a 6,000-pound truck. One would wonder if the truck maker would release a more street-oriented version of the TRX, which would be a solid followup to the Ram SRT10. But that’s not going to happen, we…