I have a 10yr old Nikko buggy that goes 5mph at most for my son to start with when he's ready (he's not old enough yet...can't even stand...haha). Then I have a Nikko truck that goes about 10-15mph for him to upgrade to. Then after that, I'll give him one of the hobby grade RCs, but toned down so he doesn't have to jump from a 10mph truck to a 40mph one and take out daddy's shin while he's learning.