Dig This High Roller Cake!

It's a week of big machine cakes as Sonny Robinson digs into a huge yellow excavator atop rippled layers of delicious earth. Aubrie Virgin makes a miniature realistic BBQ feast to accompany a big RV cake. Then, the team has to finish a 5-foot long cake of the world's biggest observation wheel: the High Roller. Can Max Fried actually make the wheel spin and light up in time?