Sorry Guys, I´ve been in the Alps for more than a week, watching Hitler´s Eagle´s Nest at the Obersalzberg from the other side of the great Königssee in a little hut at Watzmann mountain.
And I´ve got to admit - I immediately began to forget anything around - now I´m back.
So, there was a company modifying the little NSU TT´s in the 60´s and 70´s and preparing them for hillclimbs etc.
I´m not really sure if it was exactely the same company that tried to built a Supercar in the early 90´s but it has got the same brand name.
You might find out the "name" of the car itself, too.
There was only one built. It is told it was capable to do 325 km/h and had 340 HP.