You can't go on holiday without mould. And for the boys, it's mostly cars.

Muscle car, pickup, camper and especially the articulated bus. An infinitely long bus!

The photos show a 1:1 scale model.

Things to improve
In this size there are sometimes problems that some parts don't stick well on the sand. At the same time, the model could be better modified to not need so many supports. Maybe sometime before the next holiday season for version 2 :)

Print
For some parts at least hand supports are necessary. I used supports everywhere.

Grip
The models have grips on the sides for children's fingers, for a better grip you can add an extra cylinder manually with a fuzzy skin - see screen from PrusaSlicer. But it is definitely not necessary.