Reporting has been muddy, I’ll just link you to the chat in the Musk Twitter thread.
But I will note, I tried to get a quote from Geico this morning for a CT using both their vehicle dropdowns and a VIN from the internet and their website told me in no uncertain terms that it was a non-insurable vehicle. Now they seem to be backtracking while acknowledging that some customers may have been told that their coverage was being dropped.
It is clear, at least, that Cybertrucks are fragile and repairing them is monstrously expensive if it’s even possible.