The regular cab, with the short-bed truck configuration, was once the best-selling in the truck world. But it’s no longer on the 2023 Ram 1500, thanks to changing consumer demand and emissions. Over the years, these configurations have quietly died out as trucks become family haulers more than work trucks, and now with the refreshed fifth-generation Ram truck, the “shorty-shorty” has died. You might not have realized that they were still building that configuration. It was only available for the Ram 1500 classic, which is the fourth-generation truck Ram has been making alongside the fifth-gene…