>> kevin millar at spacex around 2011 elon started talking about the falcon that was taking. falcon nines and had 27 engines and kevin millar sometime back in 2012ac or 2013 was taking one of the early schematic drawings of that and have written on their retiring before this happens. but he didn't retire so was funny. >> so question from david. your favorite story from the book? >> boy, you know i've put in a lot of stuff and everything i wanted to have in their was in there. i did cut some information about the falcon ix and the first few launches of that because i really wanted to vote to be about 2001 so the last chapter i did. the lunch truck your are the falcon ix told me a funny story which really resonated. tells how musk, his eyes are never on anything but the future. there is an antic that in the book that during the first launch adopted one he gets very aggressive with the lunch conduct your canvas was 20 minutes before liftoff asking him about ordering aluminum for the falcon five. he had never launched a rocket before and this was crunch time and here he was and s

>> there was a cheap propulsion engineer and one of his lieutenants was kevin millar and spacex, and around about 2011 elon started talking about building this heavy rocket which was taking three falcon nines and sticking them together, , so you at 27 engines. kevin millar on his desk, sometime back in 2012 or 2013 at taken like one of the early schematics drawings of that and sort of britain on there, retire before this happens. this is an engineering challenge, he didn't retire so i thought that was funny. >> all right. another question from david. your favorite story that was great but you had to cut it from the book? >> boy, you know, i put in a lot of stuff that i thought, i mean everything i really wanted to have been there about the falcon one was in there. i did catch some information about the falcon nine, the first couple lunches of that because i really just wanted the book to be about the falcon one. so when the last chapter i glossed over it but the launch director for the falcon one and the falcon nine told me this funny story which really resonated and kind of tells ho