I wouldn't start buying stock in truck tire companies just yet. Long story, but within 18 months I was a student at two different trucking schools, and every instructor repeated the "fact" that all of the big trucking companies were trading in their manual transmission trucks for automatic transmission counterparts because "it was easier on the drivers". I finally got my Class B license, and every company I interviewed with told me they had no such intentions. The company that finally hired me? Their Class B truck had an automatic transmission. And, yes, as a matter of fact it was easier to drive.