Wonder if truck makers will start making 10001 # 1/2 tons.

Ummmm.....
If "I'm" reading this correctly, they are saying anything under 10,000 lbs scale wight. That would include my now dead C2500. My 05 crew cab dually. Along with every other vehicle or truck I've owned! As ALL but my Navistar dump truck scaled in at under 10000 lbs.
"IF" talking gross wieght, that's another story. I can out a 10000+ gvw registration on any truck plated vehicle in the state.

Marty