yea, as an example we have a 60 and 50 Dual Zone fridge. In the camper I have 120ampH and in the car 105ampH. We would get two days out of them if stopped and we had solar (but no sun) . I think you'll be pushing it unless you are moving every day and that's no way to see the Cape. Better to take the big fridge and cyrovac rather than freeze. There are enough stops t buy basic supplies on the road