A 10 hour journey with 3 small children aged 5 and under need not be a nightmare. My tips:

Pack snacks
Have the electronics charged and headphones at hand
Frequent stops
Lots of silly song singing
Pick out clouds and describe what they look like
Do not try to stay on your diet, road trips = Skittles and Pringles
Diapers and spare clothes within reach, not in a bag
Empty trash bag for soiled clothes, vomiting and … trash
Coffee stops for Momma and Dad (we are talking Venti)
The promise of a large glass of pinot noir at the destination! Happy trails.

Recipe:

1 1/2 cups sugar
4 eggs
3 fresh lemons (Meyer are the juiciest), squeezed
pinch of salt
1 stick unsalted butter

Method:
Cream the butter and sugar , add lemon zest if you like “bits”
Add eggs one at a time , then add the salt and the lemon juice
Cook over a low heat and keep stirring (or you might get scrambled eggs)
this will thicken in about 10 minutes. Place in clean jars and cool. Eat within 2 weeks if you can resist that long!

Tip: if it does get some cooked egg in it, do not worry, strain it into another pot, continue until thickened and it is still good !