So, you need to scrape the dumb adhesive off your car. There's a tool for that. Oh, and you also want to use it to remove dry paint, and chemically stripped paint, and smooth out excess Bondo, and everything else? There's a tool for that. It costs $15, and I wouldn't think of doing this job without it.
It is called a Bahco (formerly Sandvik) 625 1" carbide Triangluar Scraper. I'm just listing it here because I ended up using it a ton when no other tool would do. And it saved me a ton of headaches. I highly recommend this tool if you are stripping to bare metal. Or, you could just use a razor blade, like this guy.
Total cost: $15