I'm sorry I didn't do a little more homework prior to dropping $350. The quad looks great. However, the functionality and design leaves a lot to be desired. To begin with, the tires; they're hard plastic. My son likes to ride on the sidewalk because it represents the open road. Concrete and plastic is a bad combo and traction is an ever-present problem. When he hits the pedal, the wheels generally spin in place until they grab. Naturally anytime they do that they get ground down more than I would like. In fact, tires tend to spin quite a bit on anything but grass. What they should have done is design the thing with actual rubber tires - soft or hard - which would wear out less frequently, or at the very least offer a `slip-on' 1/2" thick rubber band that you could slip over the tire for added traction. Next is power - or lack thereof. My 6-year old son weighs close to 50lbs and his 4-1/2-year old sister roughly 40lbs. When they get on it together, which is 95% of the time, it puts quite a strain on the thing. Yeah, it'll go over little hills but when you have a motorized vehicle that resembles a 4-wheel drive quad, who wants to go over a little hill? It's also got a built-in towing attachment, but if it has trouble with the two of them on there, hooking a little wagon and towing a 3rd kid is obviously out of the question. Finally, the speed selector (shifter) is in the worst possible place. When placed in the faster of the 2 forward speeds, the shifter inconveniently hits the rider precisely in the right inner leg near the knee cap, which makes for an uncomfortable ride. Looking back, I should have looked into the Peg Perego Polaris 800 Twin, 24 Volt vehicle, with much more power. And even though the 800 Twin also has plastic tires (which would probably last even less with the extra power), I'd have preferred that over its sluggish, smaller cousin. Overall, I sorely regret the purchase.