Roadside Emergency!

Just as I was settling into a pleasant drive in the country, I suddenly started to hear an ominous squeaking noise from somewhere behind us. Bucky said it might just be a friendly mouse trying to hitch a ride, but it got louder and louder until the mouse responsible would have had to be the size of a donkey! We stopped and got out to look around the cart. I soon saw the source of the problem - one of the cart wheels was leaning at a very strange angle. Kevin came to have a look as well. He claims to know a lot about mechanical things, but I'm not terribly convinced. Anyway. he said it had "seized up" whatever that might mean. What was for sure was that it wouldn't turn properly any more. There we were, stuck in the middle of nowhere with nothing to eat and about 20 hungry beaks to fill! Whatever next??