I wrote the following book over the last couple of years as a way of documenting the story of a friend of mine, Steve Wurst.  Steve is an entrepreneur and highly talented engineer and inventor who formed a company and developed a hypersonic engine and flight vehicle concept.  For many reasons it failed to be a market success, but it remains a remarkably innovative solution to the problem of hypersonic flight.  This book is the result of many conversations and  interviews with Steve, as well as online research.