Decim8 is a brilliant iOS app designed to destroy photos through a expansive set of processors and filters. Aside from curating the selection and sequence of these filters, there is very little in actual user control. The variables built into each step ensures that no two outputs are the same.
Running model renders through the app results in quite a lot of excellent randomness to inspire body graphics work. It's a great way to pre-visualize how various treatments effect the appearance of the car and discover some surprises.