In case you thought cars would become safer as technology developed… rest assured, Tesla is finding newer and ever-dumber ways to make their cars dangerous to occupants (and others).
TL;DR: If you’re in a Tesla and it loses power (like in a fire), the only way to open the doors is often an unlabeled wire behind either two panels or a speaker grill. Tesla owners are DIYing janky rip cords to make that wire easier to pull to escape.
AFAIK all you need for tempered glass is a bit of ceramic material (spark plugs are an easy way to get this), at least for the side windows. Windshields are a different type of glass. Mohs scale.