Ah, "blub"... the trusty indicator of a brainwashed pg fanboy. Look, I know that something has been written in lisp, still it is not the kind of software that people use (directly or indirectly) every day and you know it. Plus, you're just being disgustingly arrogant by indirectly saying that your precious lisp is too good to be used for the mundane, everyday software development.

tl;dr: lisp zealots are funny and arrogant

UPD: FYI, AutoCAD is NOT written in Lisp, it just supports extensions written in a dialect of Lisp.