Just got this for my 18 month old, and the button is simple for him to push...

I bought this toy for my son's first birthday, he is now 18 months old and still can not push the button in. My 3 year old niece can't push it in either. Just a warning, I would not buy this toy if i were you, I put him on a little power wheels quad at 12 months and he pushed the button and took off no problem. The (easy to push) button on the Get Set Go Kart, is so difficult, it is hard for me to push, you have to push right exactly in the middle of the button that just happens to be very stiff. If you don't push in the exact middle of the button it just hits the side of the plastic and never goes down far enough to trigger the throttle. THIS TOY IS USELESS ... I will just have to throw my $120 go kart away I don't know any kid that can push the button under the age of 5 and there is no way a 5 year old can fit on this toy.