Just had my car touch less delivered. Within hour Roof crack looking like similar to yours. Now the comment it happens well I was doing the checklist on car with trunk open looking back there when I heard a noise and the saw roof. No one around nothing around the crack in roof on car with less than 20miles and ownership for an hour.I have picked up my Model Y in March and it has been sitting around with very little driving due to COVID <350mi. I have had some minor repairs and adjustment after pick up but overall super happy with the car. Last weekend I have noticed a big crack that I have in the glass roof. Now there seems to be a small point of impact but as the car has been just sitting I really don't have an idea where it could come from and we had freezing overnight temperature as well. Now that I am going to have the roof repaired, I wonder if this is typical for Tesla's glass and if there is something that I can do to prevent it from happening when I actually start driving?