No Gordon, it's a separate piece, but would require disassembly of the klicky to remove it.
Yes Andi, the bottom is the same mold so it is possible to use the three motors. There's nothing on the instructions to indicate that, something they might have considered to encourage further sales. I agree about the graphic, the shark is great - and I really like the color scheme. One minor flaw was on one side the number 24 had a little minor smudging of paint.