Over here, you can get fined for leaving a dog in a car in summer months, even if you leave the window down and have a bowl of water in there, it really isn't enough to keep them cool for long periods of time. Sometimes, we take our neighbour's lancashire heeler, Bonnie, for trips out, and if we ever stop anywhere i stay in the car with her. She's just too hyper and fun too leave alone!!!!