Well, this would explain why the Dow Transports are trending lower. https://www.businessinsider.com/trucking-truck-drivers-fuel-card-delinquencies-uptick-2019-7
"He noted that much of this 'weakness in credit' may harken back to 2018's incredibly high freight rates (let's hone in on those incredibly high freight rates) which encouraged many company drivers to strike out on their own and become independent drivers or even open their own fleets." Now some of them are hurting? It's called capitalism. When you are earning lots of money, be careful because there might be a lot of competition for what you are doing or what you are about to do.
...and save back part of that money, while the "getting is good".
Absolutely! The current trucker situation is somewhat reminiscent of home flippers during the early to mid 2000s when they believed the prices of homes would just keep going up and up and up forever. And then we all know what happened which resulted in quite a few of those home flippers lining up to get their day in bankruptcy court.
They seem to be speeding up the autonomous trucking stuff too lately.