The automotive escape hammers with the pointy spike won't do much to get you out of a GA aircraft with a plexiglass (acrylic) window/canopy, and is useless for those which are lexan (poly carbonate). They work well on auto glass, other than laminated windshields.
Oh well, so much for that.
The automatic center punch certainly works on car windows. I once saw it done, after my rental car decided to lock its doors with all my things inside and the engine running, as I was clearing snow from the outside.