running fridge at level

[diver110]

Marcopolo was nice enough to respond to my prior post. He mentioned the importance of operating the propane fridge on the level. I assume that means you have to have it turned off when driving. Can it run on electric when driving (I would not think so) or does the fridge keep cool enough to keep food from perishing while tuned off assuming that it not for too long a period?

What does a new fridge cost?

Should propane be turned off when driving?

Thanks.