The normal rules don’t apply to a My Little Pony—they’re special.
Forget about getting the horse to pull the cart or even putting the cart before the horse; a My Little Pony will actually get in the cart, bat its big eyes, and expect someone else to pull it.
Well Princess, make with the big eyes all you want. You may be in for a long wait. And in this particular part of town, being taken for a ride doesn’t necessarily mean what you think it does.
You might think about taking the bus like regular ponies.