There's a website with the Ark II on it:
http://www.70slivekidvid.com/ark.htmIf you look at the review here of the movie Hybrid you'll see the Landmaster from Damnation Alley. We were touring universal studios was back in the late 70s / early 80s and the Landmaster was parked in a lot across the street, along with that hovercraft from the Logan's Run TV show. Pretty cool! I took a bunch of pictures of it but they disappeared a long time ago.