Poor Ben did not know what to think about the Glass Roof Cracking. I was worried he was going to cry...
I would not worry about the roof too much, Ben had a very early built car before the bugs were worked out of the production system.
There are lots of reports on cracked (exploding) sunroof's from many major manufacturers. No idea what caused this one but it isn't limited to Tesla. Just do a google search on "exploding sunroof". Seems to be related to sunroofs getting larger and larger.
That's the real issue, yeah. With that enormous "glass roof" on the Model 3, it's inevitable that some are going to crack. I read recently that a semi tractor's huge windshield needs replacing on average once a year! You'd think someone would invent a coating for a plastic windshield hard enough (scratch-resistant enough) to allow plastic to replace the heavy and expensive glass that's used. Plastic, being more... well, plastic... shouldn't crack nearly as often, and would be cheaper to replace when it does.
On a recommendation, I bought a hydrophobic, cure to plastic coating for our BMW i3-REx. They report it makes an air and water tight surface so impacts don't form radiating cracks. I don't have a way to test it but after two years, it still repels water. Bob Wilson
Tempered glass is prone to cracking during pressure or temperature changes from defects or damage. It isn't uncommon for this to happen to windshields either. I imagine this will get better as Tesla improves production and gets proper install, but it won't ever go away completely.
