Cat got out of the on-highway side because they are losing their tails in warranty problems with the 2007+ on-highway motors. I drive one every day because my fleet manager got swindled by the sales guy at Kenworth. The first 3 2007 trucks we got just got sold off early because they were too unreliable. The one I had laiyed down on me at 700 miles. yep. 700 miles was the first tow for my c15 accert