Continuity mistake: When Mr. Bean is sleeping on his bed, you can see his teddy bear's head. In the next shot after the nightmare, the teddy bear's head is gone.
Revealing mistake: When Bean silences the guest in room 427 after they were playing loud music, he accidently locks himself out. Later when Bean crawls under a carpet past his room to hide from a kissing couple, room 427 has changed into a fire exit (you can see the room number has been replaced by a fire exit sign).
Answer: In Mr Bean animated there is an episode where you see Mr Bean as a young boy and had the teddy then and he also liked mini cars. There is another Animated episode where Mr Bean discovers a UFO full of people who look just like him and they each have their own individual stuffed toy.
Dan23