for energy because of the rise of renewable energy. hello and welcome to the programme. it s eight o clock in the morning here in singapore and 5pm in san francisco where the bbc s technology correspondence sat down in an unexpected interview with elon musk. the billionaire, tesla car boss and new owner of twitters in running the social media site has been painful and a rollercoaster. it s one of his first interviews since he ought twitter. it s not every day you get invited by one of the world s richest and most influential people to a sit down interview. earlier on tuesday, i d received a response to an e mailfrom mr musk let s do an interview tonight, it read. just a few short hours later, we were setting up in twitter s headquarters in san francisco. hello, how you doing? we re about to go live, very surprisingly, we onlyjust found this out, on twitter. but that is elon musk. we didn t know about that. but you never know with elon musk. when he sat down, he was in the