I am looking for an ambulance model that is as complex as possible. Or a "car" or similar that I can decorate as an ambulance. I was thinking in something like this model I've seen on Flickr:
But unfortunately I don't find the CP of this model.
Anyone could help me? I really appreciate your help!
Hello, and welcome to the forum! Please ask in the Origami Model Search section of this forum, as this section is dedicated to getting help with diagrams and CPs. (In other words, you'll probably get help faster there.) I do not know of any ambulances that are diagrammed (and I suck with CPs, so I don't keep track of those). Just a thought; why don't you ask the person who posted on Flickr?
Wonton, maybe look into the work of Neal Elias and/or Emmanuel Mooser. Their models (touched on in Origami Design Secrets) are similar to the style of the model you posted, so it shouldn't be too difficult to come up with an ambulance using similar techniques.
Robert J Lang has an SUV model that he designed for a commercial some years ago. The model and crease pattern can be found here: https://langorigami.com/crease-pattern/suv-opus-507/
It does look a bit tricky though and doesn't look much like an ambulance.