Learning new every day

I went to get a 40# bottle of propane filled. They filled it and put it in my car, then informed me that I am NOT supposed to carry that in my car. Well, it's the only vehicle I have, so what am I supposed to do? I do have to have heat in the house.

Of course, they didn't stop me or refuse to fill the bottle, but this puts me in a quandary. Josh has a truck, but it's not always convenient for him to run get propane for me. I hate to even ask, you know? I feel like I'm imposing on him even though he's never once complained.