I am one of the "do gooders". HOWEVER, if I see a dog in a car during certain higher temperatures, I would stand outside their car until the owners came and would only smash the window if the dog was in serious distress....or call the police if I could not stay for a length of time.
For me--I carry two sheets of paper with me, one for each side of the car, that I fold at the top and close the windows on. They say "CAR IS RUNNING WITH AIR CONDITIONER ON FOR THE DOGS". I never let them in the car for more than a quick run into the store. Since you are fortunate enough to have a temp. monitor for your car, and you can go into a restaurant for 45 min. and KNOW that your dog is safe, maybe you could add onto a sheet that you ARE monitoring the temp. for your dog.
Please remember that us "do gooders" are NOT crazy when we break windows in cars with dogs inside that are in distress. ALMOST EVERY DAY during warm/hot weather MULTIPLE dogs throughout the U.S. die a HORRIFIC death because owners left them in the car "for just a minute". Some of those dogs are scent/attack trained dogs that work for the police department---their trainer (police officer) "forgets" and lets the dog in the car where they die from heat strokes.
