That's DER BEE not DAR BEE.
My son is in The Boy Scouts Of America and recently took part in their annual Pinewood Derby car race.
Basically you are given a lump of wood and four wheels with which you have to make a race 'car'.
He decided he wanted to make Optimus Prime and whilst I warned him a truck is not exactly aerodynamic I had to admit it was a great idea.
Here's his effort which I of course 'helped' him make.
He didn't come first but for sure his was the coolest which is all his proud father wanted anyway.