Hate to be picky, but your names for vehicles are VERY misleading to anyone trying to understand what you are talking about with no photos.
A cart ALWAYS has TWO-WHEELS. If it has FOUR-WHEELS the carriage is NOT A CART!
Anything with wheels pulled by equines, can all be carriages. But calling a 4-wheeler a cart, makes the wrong mental picture in a listener or viewer's mind. So anyone trying to respond to your posts will probably be confused about your vehicle and maybe give wrong information to help you. We all have used the wrong terms about stuff, it is part of the learning process. So think of this as your "helpful" word of the day. Not trying to be mean, just want to clarify driving terms for you so we all mean the same thing when we say that word.