It was apparently too loud and clattery for them. Which I understand, but it's not like we're sticking around. They'd only have had to deal with it for a little while longer as we passed them by.

[The question gets a decisive nod and grin.] Without a doubt. This wagon was one of the best ideas AJ's ever had, and I'm really pleased with how well it came out. Rainbow's Ponyta and Fluttershy's Boufallant don't seem to have too much trouble pulling it, either.