Tractor trailer vs Texting Teen

Hey, is she runnin LTL with that rig or strictly Expediting?? I've got an '85 Cushman that's actually a Van. Fellar told me that his get's 90mpg!! I'ma check what the GVWR is on it and get my MC number.. Should I put some 4" exhaust stacks comin out the side of the cab?? Some air horns, CB Radio.. Man, I gotta get busy!!