I bought a medela adapter online. It was a lifesaver. Good luck.
BFP#1 - 9/19/2012 M/C 10/8/2012 7W5D
BFP#2 - 1/13/2013
This is our first child. We are praying this one is our sticky baby. Hoping and praying for a successful 9 months.
You can always buy an adapter that is like a wall outlet plug-in for your car too. That's what I did! Plus, it comes in handy for more than pumping while you're in the car. I picked mine up for $20.
Re: Car adapter question!