I saw that trucking companies are now training their own truck drivers. One particular case, the company was charging $3700 (or something like that) for the course; you paid something like $700 up front. After completing the course, if you worked for the company for 1 year, the other $3000 was waived. If you worked for 2 years, you got back the $700 too. Starting pay for a brand new driver varied between $32k and $45k.
My old boss recently took a month or two off from managing (he's the owner) the pizza shop, so that he could go on a lengthy trip with a friend who was a truck driver. For a month, they just drove around the US; picking up a load here, taking it there, picking up a load there, and taking it some place else. He loved the experience. Maybe that would give you something new and somewhat interesting to do for 3 or 4 years? (or longer)