I've done some research, and so far the Britax seems like a good convertible car seat. I can't however find out which ones are the small enough to fit into a compact car. It's 4 door, but I don't want to be squished. Thanks!
Haha Live animals... awesome.
I also don't think a little yellow sign in the back of a car will make anyone drive any better. People are going to drive how they want to drive. Maybe if you put a bio hazard sticker on there... Hehe. Just kidding. :)