At least twice I've tried to add new vehicles in an episode of New Girl (2011, TV-Series). I can understand the reason for rejecting one of them the first time, but the second time there are no play buttons on the screen.

The first vehicle is a three star vehicle; An International 3800 with a Blue Bird school bus body used as a party bus, and hired out by the main character for one of her roommate's 29th birthday party. It contains almost the entire main cast, and it gets involved in a crash.

Here's a shot of the Blue Bird logo on the side that's covered up. There's one over the windshield inside the bus that isn't though.

Finally the front end.

Just for more proof it was involved in a crash, here it is, with a 1995-97 Ford Crown Victoria Taxicab picking up passengers to bring them home. Two stars for this one.

And for good measure, and to keep the page from getting a single image on one corner, I added this one-star Porsche Cayenne. So what was so wrong with them?

For series, you are not supposed to add pictures of newer episodes when someone else is already adding pictures for it. That may be the reason why they were rejected (if you mean rejected by admins, not by the site itself).
In this case, it is me But as often I am a few episodes late (last one I watched is 1.07).