Later in the 1950s Pretzel manufactured, a two-level ride which a chain lift. The two remaining ones are at Camden Park and Conneaut Lake Park.
A third one does still exist, or at least did as of 2008. The people who run Shocktoberfest in Sinking Spring, PA had found one and set it up for their 2008 Halloween season. Still fully operational with plenty of working props. I only rode Devil's Den at Conneaut Lake once, but as soon as I got on this I recalled the very similar layout and the "riding in a shopping cart" feel. I don't know how many years they kept it or what became of it since, but I don't believe they used it this year.