World 7-3 (New Super Mario Bros.)
From the Super Mario Wiki
The level begins in an area with two Wigglers and two Warp Pipes. Upon entering the green one, Mario will come out in an area where the he must ride Kyodai Hanachan to reach the end of the stage. While riding Kyodai Hanachan, the player can get many Starmen that leave trails of Blue Coins as he moves.