Vinyl letters are good on cars when you just want to share a little info or add a little design flair, without going full vehicle wrap. We also use cut out vinyl as temporary wall lettering (like in museums and art galleries), on name plaques, no trespassing signs, the list goes on. When the decal is big, it's better for us to do the application. But they are essentially custom cut-out stickers we can send home with you to apply yourself, if you're feeling ambitious and confident with a level.