It really is addictive. What I have found is that it is hard to stop once a session has begun so I think I will limit myself to a few sessions a week. Once a bunch of images have been created which I am happy with I will then have another session with that program I mentioned to upscale my selected images to the professional level.
Unquestionably this will help you find design ideas for your van. Don't forget to include a style with the words otherwise it will always default to the fantasy mode. Which may of course be what you want? But always interesting to see what happens when we include the 'parameters' of other artists or filmmakers. Ah yes, check the reference sheet I mentioned to find some ideas on that front.
Have fun!