Hey! Play!Toy Race Track and Racecar Set- Wooden Car Racer with 4 Colorful Cars with Moving Wheels, Ramps- Fun Cars Set for Boys and Girls , Brown

This is a common toy that you see several people selling on Amazon. For the most part, it's pretty straight forward and seems like nothing could go wrong. However, if the car isn't lined up perfectly with the entry point ramp, the car will get stuck when it falls to the next ramp. Sometimes it falls cleanly, then gets stuck on the second ramp. This is a design flaw caused by the ramp walls not being high enough and the car's wheels not being tight enough (makes it not drive straight). I would guess that 25% of the cars don't flow down the ramps all the way. Not a big deal... unless you have a 2 year old that is short on patience when it comes to frustration caused by things not working as planned. Something to think about if you child gets frustrated with toys easily.