Sounds like a Baja5B or any other 1/5 cars. Probably heli or plane?
So far, intellect does have it's problems but people who race tends to like them.
oh ya didnt thought of tat Baja uses sub C battery for its rx. haha but battery theoritically will only explode if expose to heating, overcharging or short cct. normal usage should not be able to make the batteries explode rite? unless short or leaked internally. but if its new not likely lay.. if tats the case then its manufacture fault already. can claim them? haha even over charging will cause the batteries to leaky badly not really to the extend of explode lay.. really serious case leh if it really exploded. say like daddy bought a kits for their childean then wat if it explode in child face? dangerous issue.