re: Dog behind vehicle?

I ride a bike on the road all the time. I sweat my arse off when it's 68 degrees in my house and I'm on the trainer. When I get out on the road and lets say it's 85 degrees, I barely sweat because of the air flow. And that's exerting a good bit of energy burning damn near 2000 calories. Not saying its heaven for the dog, but I don't think it's going to cook to death.