Regular Show carrinho Theory

Mr. Maellard says "Those carts aren't cheap." and makes Benson buy a new carrinho in the "Busted Cart" episode. But whenever a carrinho blew up and or crashed no one else seemed to care, and they seem to have an ABUNDANCE of carts available. Everyone says "The cart" but Maellard says "carts" which seems to show that at least he is aware of the multiple carts. In the episode where Benson gets super angry, he actually destroys a carrinho himself,but a dividido, dividir segundo later, Pops and Skips are seen driving a carrinho with two rows, which shows that there are multiple variants of carts as well.

So why did he have to get a new cart? Could it have only been because Maellard saw it himself? Possibly the characters refer to "the cart" as only one can be in use at any given time? Even so, why does Benson want to "replace" "THE CART" with a new, mais futuristic one, implying that there was only ever one to begin with? Maybe he just bought ONE NEW CART, and possibly wanted to replace them all with the prototypes later on?

Also, in the zombies episode, Rigby says "Mordecai look! A cart!" using the generic form, indicating that somewhere there are mais carts.

And in the SAME EPISODE, beforehand, Benson says "The carrinho needs a new suspension system."

So what do ya think, m8s? How many carts does the Regular Show Park really have?