Well actually my main reason to have rescue tool handy is the glass tool. I'm in a country with a lot of water... Seatbelt cutters are just on the same tool.
Good point! I forgot to mention that. Carrying a window breaking tool makes good sense.
I also found your comments on how newer cars require different rescue methods interesting. I was reading an article awhile back that made similar points about airport fire/rescue teams. Newer designs and materials have made air crashes more survivable, but also require different methods for fire/rescue teams to put out the fires and get people out.