The Super Beetle had some major suspension upgrades compared to the original Beetle (which continued to be sold alongside the Super), including a McPherson strut front end. The front bodywork looked a bit different, but they were all Beetles.
These cars loved to rust. Even Arizona and New Mexico Beetles can get rusty. The 1958 Beetle I drove as a teenager in California had spent its life in the allegedly rust-free Golden State, and the floors were rotted out by the time I got it. This '73 has some scary spray-foam rust repairs.
It proved very difficult to get the Type 1 engine to comply with tightening United States tailpipe-emission regulations (and few VW owners kept the valves adjusted, so most of these engines ran like crap). For 1973, this 1600 produced just 46 horsepower when new.
You shifted into reverse by pushing down on the shifter and moving it into the second-gear position, hence the weird shift-pattern diagram.
Big and luxurious, according to this ad.