True Story: This week when I heard Lutz was retiring I sent him an email thanking him for setting GM Product engineering on the right course, letting him know my wife loves her Malibu, wishing him well in his retirement, and inquiring whether he'd be writing another book.
I got a response back from him five minutes later!
"Thanks, Bruce! A book is definitely in the cards! It'll take a while, but I can't dawdle, either, or people will have forgotten! "
This is the second time I've sent him an email in the last ten years and just like before he responded immediately. Maximum Bob at his finest