Hi russ
That's the age my sons going to be 7 as well how strange there are a few I have seen I will add the link to the one I have looked at.
http://www.conrad-uk.com/ce/en/product/238003/Reely-110-electric-buggy-model-car-Rhino-II-4WD-EP-250B-RtR-24-GHz
I know (reely) is not a well known make over here but I just won a reely car on eBay its called a carbon fighter brushless ow my god it does go and looks well made as well the company do all parts as well.
Not sure yet.
What do you think of that one.
Roker