I love how Musk will just put "giga" in front of things to make it sound cool. It's sooooo silly and ridiculous, like something a 7 year old would do, or a comic book supervillain.

"Sir we've finished the road to -"

"The gigaroad."

"Er, yes, we finished the gigaroad to the facto-"

"Gigafactory"

"..."

"😎"

So they are among their other problems hard to repair even the body panels

Zach at Jerry Rig Everything snapped the hitch and nearby frame off his cybertruck with an excavator (for science!), and Tesla repaired it for him and let him film the repair. They have a really impressive adhesive that lets them replace partial panels. (One neat engineering speck in the sea of Tesla awfulness.)

It might not be that the truck is truly unrepairable, but it's a relatively expensive repair, and insurance weighed the immediate cost plus future liability (the repair will always be blamed for future problems even if it's not really the culprit) and decided totaling was the best decision for their business model.