Trying to run refrigerator on the road

[Notanlines]

We are getting ready to leave south Florida and head home to Tennessee. Of all the things we went over with the walk-thru tech we did not ask if it was possible to run the refrigerator while travelling down the highway without the generator running. This is our first RV with a residential fridge and I never gave it a thought on the walk-thru. I have my doubts, but it doesn't hurt to ask.