"Why does Thunderbird look so old, and why does it take so long to change?" Let's answer that burning question with some important history, and a look into the future.
"Pam mae Thunderbird yn edrych mor hen, a pham mae'n cymryd cymaint o amser i'w newid?" Gadewch i ni ateb y cwestiwn llosg hwnnw gyda rhywfaint o hanes pwysig, a golwg i'r dyfodol.