A chocolate cake with yellow tinted buttercream. I made this for a goodbye party at my moms work. She is a dispatcher for a tow truck company. Their trucks are blue and yellow so i incorporated it into the cake! This was my first sheet cake of this size and it was definitly very interesting, lol, i had a difficult time with it. I actually havent done another sheet cake since, lol!!! I didnt know how the do the shell border so i did a star border instead and the Tow truck is made of fondant.