As mentioned--this guy wasn't towing a 1000lb Steinway 9D...it was a digital synth in a piano hull.

It is a common gag for most on-the-road acts, even those using proper shipping methods. You start with a piano, and gut out basically everything:: action, keys, soundboard, pinblock, etc. Normally, then you ship the carcass without its legs on...get to the hall, and unload it. Put the carcass back on legs (takes only 3/4 guys)....and put a digital synth where the keys otherwise go--and patch the sound output to the onstage mixing console to be sent to monitors and FOH. The piano box is literally an empty box only there for illusion. Most major artists do this--those who don't use the hall's piano, very seldom do they travel with a full real piano in a truck. Because as you note it is hell on an instrument and runs aup a huge labor bill in maintenance.

Which BTW...is why if you see on-stage-camera shots of a piano player from a professional road production...they try not to film fingers on the keyboard from any angle that could show that he/she is not playing a "real" piano.

This guy, being his own act and transit, loaded extra speakers inside the hull to make it a stand-alone system. Similar to say a Yamaha Avant Grand but 10X cheaper.