Yeah that is just classic "what sounds really impressive but actually isn't that bad" marketing nonsense.
It might be able to withstand an atomic glass but it's still going to crack if a big enough stone his it at 70mph.
It might be able to withstand an atomic glass but it's still going to crack if a big enough stone his it at 70mph.
I'm not saying that Tesla windshields are vulnerable from that, in fact, most windshields aren't. However it shows that resisting a blow from a hammer that is neither sharp nor hard is not a conclusive test.
The difference is in how they break. Laminated glass will generally crack, but otherwise stick together, while tempered glass will shatter, but into less-sharp pieces (to minimize the hazard of broken glass).
I don't know how much of this matters, but it stands to reason that what works on a side window might not be the same as what works on a windshield.