As a driver you should get your B,C and C+E as well as hazmat before you finish your phase 2 training. You may also get others such as the RTCH license, should you decide the army is not for you at least at the end of your minimum four year you will have qualifiactions that could help you get a job on civvie street.
As others have said, nothing wrong with RLC Driver trade. Most are good honest hard working soldiers. You will work hard, see operations at the pointy end, get shit scared, tell some war stories, meet good mates. Go for it, you can always transfer later if it does not meet your aspirations.
If you do decide to be a driver, and then want something a little more challenging, you could always re-trade to Driver Communication Specialist and get even more good civilian quaifications. Oh, you also get paid a lot more at the JNCO level.
1 day off in months and some joker want loads rigging!
But back to the original post, he/she could do a lot worse than 47AD.
If you want to actually drive trucks, we do more millage than most major units.