One: the wheels. Rather than having two front wheels that spin for steering, all four wheels spin so you can pull you cart sideways to get out of peoples way...pretty convenient.
Also, notice how they look chunky? Those are magnets so when you're on an escalator (like in the picture), your cart doesn't roll away. This is like an airport escalator on an incline, not stairs. Very convenient put kinda slow.
The other real difference is on the handle, notice the box on the handle? Yeah, you have to put in a 100 won coin (about 10 cents) to get the cart to unclip from the others, then when you reattach it (so they know you return it to the right spot) you get your coin back....and let me tell you people are pretty serious about that little coin, I've never seen a cart in the wrong spot.
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