This was a great and detailed guide to the time machine， done by the folks who made it happen in the first place。 But there were a few obvious oversights and errors that almost any BTTF or DeLorean buff would catch easily。 They were surprising because of the involvement of original filmmakers， prop masters and the DeLorean community in the creative process。 That said， it’s still a ton of fun and something I’m really glad I bought and read！ A great addition to my memorabilia collection。