Lithium used for mobiles phones and remote controlled electric...

Lithium used for mobiles phones and remote controlled electric toys. Lithium hype is over and Tesla won't be taking over combustion engines anytime soon. Lithium batteries do not last long they overheat and puff and have a short range. Elon Musk is dreaming of inventing sonic boom electric jet plane well he can keep dreaming what would happen if the battery puffed up in mid air and caught on fire? My remote controlled electric ducted fan fighter jet running on graphene lipo 5000mah pack 130c rating only lasts for 5 minutes with bit of throttle control but making a large scale electric plane that weighs tons would be impossible.