X-Plane Lars Hoyer Vehicles 1.0. These 37 car and truck objects were originally made by Lars Hoyer back in the stone age. They were packaged into a library for use in FS2004 in 2006 by Steve Ziegler; I haven no idea when Lars made the originals. I am unable to contact Lars, but since he made them for anyone to use in freeware scenery, I'm guessing he'd have no objection to me converting them for use in X-Plane. Thanks to Arno Gerretson for his magical ModelConveterX. By Sidney Schwartz.