[Prism]

Hi,

I need some help to find a toy and its set.
It's a skull headed snail with two arms and a phosphorescent white body coming out of a grey crackled shell with wheels underneath.
Here's a quick drawing I made:


I bought it at Toys'R'Us in 2002-2004 I guess, and it was part of a set of racing snails toys. I think it was made by Mattel.

Does anybody has an an idea of the name of this toy set please ??