There is no extended car scene.
There is proof on the lost media archive, a user named Nevan made up the extended car scene and even provided a fake cel that is literally in the film.
Someone contacted Gary Goldman and asked him about it, and Goldman debunked the lie.
Unfortunately, many people still believe that lie, so I felt it was my responsibility to tell you all, it was a lie made up by someone who literally said the reason they made it up was because they were bored.
Sorry, but I just couldn’t stand seeing people believe this lie any longer.
As for the hell scene, I think it’s proof the uncut version of the movie still exists (and in good quality too! Even in open matte!). If only that tumblr user could tell us what the summer art program was.
And if it makes you all feel even better than that, I heard of another deleted scene that took place while Charlie was first in heaven, and it’s where they looked down into hell and saw a single bad dog getting tortured.
Now don’t get too excited, it definitely wasn’t finished, but it must have been voiced and partially animated. It probably wasn’t going to be in the directors cut though. Which means the runtime difference between the extended and theatrical cut is only 17 seconds. That’s not much, but this is still worth finding yall!