After a formula one race they weigh the cars and check them over to make sure they're within the regulations. Recently they drained all the fuel out of two of the cars before weighing them and they were found to be underweight, it turned into a big debate as to whether they were supposed to drain the fuel out before weighing the cars or not.
I drew that after me and my dad had a joke about them wringing the cars out like a flannel before weighing them, the obscurity isn't helped by my inability to draw accuratey