XD I updated the ambulance ortho images... Still, this model, when it is created based on images, has these voxels wrongly extruded due to the geometry... The best way to get the model is to use the JSON upload (Load Model Button) is the clean version of the model.
The ambulance example could be used as personal or commercial use... I have some cars already (Police Car, Pickup and Old Van) on sale using PixZels Json file names that are on sale and can be used for personal or commercial use. I think it is a good option to take existing cars and make modifications to get more different models... It is a good base.
Looking forward to seeing your creations.
Thanks.. If you need anything different let me know.