I sold a couple just weaned babies to a gentleman, on the way home he set the carrier on the floor of his pickup thinking it was the coolest and shadiest place for them.
It is, but he didn't realize that road heat comes into play and cooked both of them. When he got home to Spokane (~60 min drive) he found them barely alive. Neither made it.
Hard lesson for both of us.
I thought the back seat, buckled in a small carrier was the best. Make sure they are not in a sun beam. I bring a few pieces of paper and tape to tape to the windows just in case. The Florida sun can be relentless.
Ann you are quite a bit more patient than I. I don't anwer my phone in the middle of the night for anyone other than my dad or my brother (who is a police officer).
I wish there was a booklet somewhere I could give new chin owners of all these stories. Then maybe they would actually lisen when we tell them things.