I was a software dev and SWQA since 1988, with a few years taken off in the middle to deal with some externalities.
I rage-quit my last SWQA job, then discovered that a 60+ year old B player ought not to have done that. And so I drive.
What do I do with all the time in the truck? Drive, watch the road, watch out for you all (you all are cray, and are probably gonna die, I'm just sayin'). Watch my time from various perspectives: time/miles to pickup, time/miles to delivery, time left on my allowed driving time, gallons of diesel remaining, will I make it on time, do I have to warn of late arrival, should I pull off and shut down for wind, rain, snow, ice, fatigue, when will the local troopers open the highway to trucks again, am I speeding or following too close, am I holding people up behind me, are you f'ing tailgating me, are my brakes on fire, what's going on way up there (I can see pretty far with my head ten feet off the ground) ...
I don't care what you're doing in your car, and I virtually never look, except once in awhile I'll look at your head (or search my spider sense) to see if you're paying attention. To the road. Not to your phone.
When I'm not doing that stuff: I don't have a CB radio. Sometimes I don't play any audio and just think, or enjoy the scenery. It's an incredibly beautiful and interesting country. Sometimes I chase NPR across the radio. Wyoming is a pretty good state for NPR, because they have translators all over. Once in awhile I'll drive through a college or tribal radio station that really does just play what they feel like, those are good.
Sometimes Pandora. I've been trying to listen to podcasts, but it's not a great experience. I can't seem to manage podcasts via Pandora or Spotify very well. I don't like pre-downloading, I'd like to just listen via a stream (most recently VLC on Android, bluetooth to my radio, but the casts often just end in the middle (lost cell signal?) and go to the next one).
My thoughts on the industry as a whole are, I can only see a tiny sliver of the industry. There seems to be an infinite number of ways to get stuff from here to there, and all I really know is working as a "solo" (not part of a two person team), "company driver" (not an owner-operator) for one of the large truck companies.
When I started two years ago there was a huge trucker shortage. Now some companies have gone out of business, but "they" say that it'll pick up again soon. I believe large companies are still hiring, because industry turnover is huge. Lots of people decide they don't like it. I like it a lot.
It's a really good job for me, as I'm not very sociable. I'll go months without going home (divorced, one grown son). Most long distance drivers take 3 or 4 days a month in "home time." Some drivers are regional or local and they're naturally home more often and more regularly.
I drive a 2017 Kenworth T-680, 15 liter straight-six Cummins engine, 10 speed Eton automatic. I mostly pull "dry vans," the 53 foot closed rectangular trailers that you mostly see. Sometimes I'll pull a "reefer," refrigerated trailer, basically the same as a dry van but you also have to pay attention to the reefer operation and temperatures (multiple compartments inside the trailer).
I typically have about an hour of time at the end of the day, and an hour in the morning. Sometimes a little more. Rarely a lot more, when the company hasn't found any freight for me to haul. The longest I've spent without freight has been a weekend, and that's rare. I only get paid for miles driven in service of an assigned trip.
During my typical two +/- hours/day I eat, clean, read, communicate with the fam. I've written hundreds of emails home, with pictures, and I'm trying to clean some of those up to get them posted at a location to be named later. In my free time.