I think that if your dog wasn't showing signs of discomfort, and was perfectly fine in 60 degree weather, they should just but out. It shows that you love your dog enough to take them with you just to goto the grocery store for a little bit. If it was 80 degrees, and you're doggy was panting and the windows were up, it'd be a completely different story. But the point is, it wasn't. And personally, I think the lady was just trying to make a scene. I wouldn't stop bringing your baby places(but not for too long) just because some melodramatic person says its wrong.