
This was the car that killed NSU.
It was a brilliant car. Modern and beautifully designed, it had one flaw. The engine. The early NSU rotary engine was wholly unreliable.

The cost of replacing these engines crippled NSU. In desperate financial condition, it was bought by Volkswagen.
The problems with the Ro80's engine were eventually solved. The car continued to be sold until 1977, but by then few people wanted it. The early cars killed its reputation. The Ro80 was the last car to be sold as an NSU.

VW merged NSU into its Auto Union brand. The new company was called Audi NSU Auto-Union A.G. Or Audi, as we know it today.
NSUs management was moved to Audi's headquarters in Ingolstadt. Their influence is unmistakable. The basic design of the NSU body can be seen in the Audi 80/90. It can still be seen in the A4, A6 and A8 today. (Also, Audi's A6, A8 and R8 cars are built at the old NSU plant in Neckarsulm, Germany.) It has been said that without NSUs engineering influence, Audi would not be the premium brand it is today.

This car appears to be in good, restorable condition. It is being offered on eBay with no reserve. Located in Livingston, NJ, you can find the eBay listing here.
My earlier NSU Ro80 post can be found here.
NSU Trivia:
Had the NSU rotary engine been relaible, NSU may have been in a position to buy VW. Virtually all the world's major motor manufacturers purchased licenses from NSU to develop and produce the rotary engine, with the single notable exception of BMW. Only Mazda builds a rotary today.
NSU and Citroen set up a company called Comotor (Comobil) to build engines for Citroen and other car makers. Citroen built just 847 GS Birotor cars, before pulling the plug on the venture. Citroen was so dissatisfied with the sales and reliability of the car they attempted to buy back and scrap every Birotor made. A few survive and are supposedly remarkable cars to drive. You can see some pictures of a Birotor here.