any suggestions for a 2 year old?

hey guys,

my little guy is about to turn 2 years old and he has had a little cheap electric 4 wheeler my sister bought him since he was a little older than 1. He loves the the thing. But he is kind of growing out of it, not necessarily size wise but what it can do. Hes big for 2 (97th percentile) but hes still 2 so it needs to be somewhat small. I want it to be electric because thats easy for my parents to just plug in. I dont mind it being able to go faster but it would need to have a governor on it. I think at max right now he should be going 5~ or so mph and as he gets more used to the more power bump it up.

Anyone know of anything that would meet this criteria?

Thanks!