Although there are many ways you can create 3D models from photos, those easy-to-use software cannot perfectly recover most of the irregular objects. That's why we still suggest you shoot the photos of the thing you want to print from multiple angles so that our sculptors can precisely build the model.
Solution
Step 1: Communicate with our client about the size of the model and how it will be used, the expected functions, precision and surface effect. Ask our client to take the photos of the police car from at least six angles.
Step 2: Build the 3D model from the photos. Generate the rendering and show the images to our client. Make revisions until our client feels consent.
Step 3: Print the model with SLA Generic Resin, cut off the supports, sanding and polishing with grater and sand paper. Spray with putty, paint the ground color, and screen print the patterns and characters.