Removing a sticker from a car window can be a bit tricky, but it's doable with the right approach! You might try using a hairdryer to heat the sticker, which can help loosen the adhesive. Once it's warm, gently peel it off with a plastic scraper or your fingernail. If there's any residue left, rubbing alcohol or vinegar on a cloth can help wipe it away. Have you tried these methods before, or is there a different type of sticker you're dealing with?