Ram Long-Hauler prototype spotted testing

In the past few months, Chrysler's Ram brand has gone from also-ran status behind Ford and General Motors to a class leader in many truck categories including fuel economy (25 miles per gallon highway) and towing (30,000-pound maximum capacity). Now, based off these spy shots recently taken, it looks like Ram is preparing to introduce the be all and end all of pickup trucks, with a production version of its leviathan 2011 Long-Hauler Concept.

Our spy shooters recently caught the two-year-old concept truck running around Auburn Hills, MI covered in stickers that would indicate the truck could be testing for a production model, and last we heard back in September, Chrysler has been trying to build a business case for the massive hauler. On the other hand, seeing as how the only changes made to this truck since it was first unveiled are a full factory tailgate and various Mopar accessories (mud flaps, exhaust finisher and bed step), it doesn't appear that any changes have been made that fit in with the recently announced 2013 Ram HD models.

As a refresher, the Long-Hauler rides on the 197.4-inch wheelbase of the Ram 5500 chassis – usually reserved for stake or box trucks – allowing it to combine the luxury of the Mega Cab with the cargo capability of an eight-foot bed and enough room in between to fit a 60-gallon reserve fuel tank. This, along with the 50-gallon, in-bed fuel tank and the truck's factory fuel tank means that the Long-Hauler has the ability to carry 162 gallons of diesel fuel – enough for one incredibly long haul.