Whatever funny, inspirational, and custom car window stickers you are searching for, you will find some good options in the market as well as online vendors selling the stickers. With custom design, you can find many opportunities to add the text you want, use a logo, or create any image you like. You can have a designer make these stickers for you in bulk or as per your requirements.
Car window stickers are also a promotional item, and often business uses the labels for their marketing purpose. If you run a business, you, too, can get custom car decals and stickers for your business promotions. Several online stores sell such stickers. You can look at some to get ideas. If you do not find what you are looking for, you can place a custom order online as well with your specifications.