You're browsing the GameFAQs Message Boards as a guest. Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.
The car is still banned. What's odd though is that it displays the "this car is banned" message three times.
I'm inclined to guess that maybe it's because the car uses exactly three parts that aren't allowed online. But I have no idea why any part wouldn't be allowed online except that maybe the parts are too awesome and detailed for the game to handle while being online. -_-