I bought 4 of these. 2 were brand new, 1 was like new, the other was heavily used, with broken wheels, and was missing the tool, and instructions. When assembled correctly, these cars are great fun for kids and work well on smooth surfaces. My older grandkids (9 & 11) can fly on these things without ever having to put their feet on the ground. They turn on a dime and can go pretty fast just by using the steering wheel. On the flip side - 1) They don't work well at all on carpets, 2) They are extremely noisy on tiles, 3) There is some assembly required which can be tricky, and requires some additional tools. (A mallet, and a decent Socket set with a ratchet.) Here are some tips on putting it together: There is a tongue on the rear wheels that helps you put them on the correct side. Make sure to align the tongue on the wheel shaft with the groove in the car - then use a mallet to whack it in place making sure the tongue goes into the groove. This connection is meant to be permanent so if you get a used car and the wheels are off - this permanent connection was broken and might not be stable on a second installation. Next - the front wheels. Remove the orange foam collar on the tube (if it's there) - insert it from the bottom and put the black foam over the tube and poke the end through the hole on top. IMPORTANT - turn the car over and hammer the wheels down with a mallet till the wheels base is flush with the car. The steering wheel: I have seen comments indicating that it is impossible to install. I ran into this on a couple of the cars as well - but there is a solution. The way this works is that there is a bolt with a cone shaped end that fits into a knurled (rough surface), split sleeve in the steering column and pokes up into the steering wheel where there is a nut you are supposed to tighten. When you tighten the nut - the cone shaped end gets pulled up into the sleeve and forces the split sleeve to open and press the rough surface against the inside of the tube attached to the wheels so that it will not spin inside the tube - but instead will be force fit into the tube so when you turn the handle the wheels turn with it to steer the car. Even if you have no idea what I'm talking about, if the nut inside the steering wheel just turns and turns and never tightens - try this: Take the steering wheel with the nut and bolt out of the tube. Push the bolt with the cone shaped end up into the split tube as hard as you can and hand tighten the nut inside the steering wheel. This sets it up to be tight enough that after you put it back - when you turn the nut - it will put pressure on the split sleeve and you should be able to tighten it. Only tighten it lightly so you can align the steering wheel - then tighten as hard as you can. If you have a ratchet with a long handle - just hold the steering wheel with one hand and tighten the nut hard with the ratchet handle. When aligning the steering wheel - position the wheels so the small wheels are in the front of the car and the wide part of the steering wheel is at the front of the car. If you mess this up - I think the car will still work but the steering wheel will be backwards and not be as comfortable to hold while riding. One last thing - The smaller wheels only seem to be used to help prevent the car from tipping over when leaning through a sharp turn. They help to stabilize the car - but a young kid could still tip it over. Since the smaller wheels are only used for stabilizing the car on turns - they do not touch the ground when the car is sitting on flat ground and going straight. That is normal.