I'm wondering if anyone has tried running their vest and/or nebulizer compressor from a car AC DC adapter. I know there are portable vests and nebulizers, but they are quite expensive, so I'm looking for a way to use what I have while on vacation. If anyone knows what works (or doesn't work) when running the vest and nebulizer in a car, I'd appreciate your advice. I'm planning to go camping in a Prius and have a vest from Hill-Rom.