Wow, very cool video. I actually remember watching this movie in a CPR class I took in the mid-'70's. The title of the movie is "Check the Neck" (as if you hadn't guessed from the number of times they say it in the narration). I haven't seen that movie in 33+ years but I knew exactly what the next scene or next line of dialog was going to be, like I'd seen it yesterday. Thanks, Steve, for taking me back a few years!
That is a very nice Pinner ambulance as well. If you can't get the photo, here is a screen shot from the video. My photo program can't make it bigger, it only shows the movie full screen (can't access the program) or small, so small it is. And thanks, Jack, for the confirmation!
(Did all old 16mm films turn pink after some amount of time? I have another old film that is also pink like this.)