Hope this isn't too late...

I suggest bringing him with you where you go before leaving him in the car. My friend has a pug and Nala goes into stores with them and since she is small, the people don't really mind. I think they even bought one of those carries to hold the dog in front of them like a baby.

Stores have cool pads that your doggie can laid on. There are also bandanas and coats that keep them cool.

http://preview.jbpet.com/Shopping/pr...Fid=524%2D0102

Good luck and have a great time!!!!