These are amazing!
I'm going to go back through the thread, download fonts and templates, and try to follow the instructions so I can make some for my subway-obsessed 5-year-old. Thank you for posting all of your hard work, templates, and fonts.
One question: Has anyone ever tried making a website/app that can auto-generate these? (That is, take the correct template for a given model train/bus, pair with the correct font, and then scale and align so you can just type your message?) It looks like a ton of work goes into these, and I didn't know if it was a replicable enough process that it might be able to be turned into an interactive website.