If you need to for financial purposes I completely understand but if not, why oh why oh why on earth would you do something like this?
I read about this on here, in fact Ive never come across it in real life, people lugging dishes of spag bol or lasagne or curry or whatever in the back of the car (like there isnt enough stuff in the back of the car already).
Holidays are for relaxing arent they? Take a picnic, buy it in the local supermarket there, go out, have cheese and crackers
Anyway, enough of my confusion
If I HAD to do something like this, then easy ones would be to mix up the spag bol sauce or ragu sauce in a big pot, then cook the pasta once there, chuck cheese over it
You could take pots of soup and just have nice bread, cheese, olives, salami etc etc
You could cook a load of hard boiled eggs, salmon, new pots all in separate pots for a salad
Its about your storage facilities and whether you want sweaty old pots travelling round with you.