To leave your dog in the car in the summer? I'm thinking about buying one of these and a crate fan for when/if I need to leave a dog in my car this summer (in the case that I have back to back classes with separate dogs). But I'm concerned that there wouldn't be enough air moving through the car to keep them cool in our 90+ temps. Is it doable? I know we have people on Chaz who have to leave their dogs in vehicles for agility trials, or to go to class, or to take one dog out, so how do you do it?