The Lancia Stratos Zero, one of the wedge concept cars of the 1968-1970 school of tiny flat angles.

coincidence that the above poster was what I just found last week? http://justacarguy.blogspot.com/2012/12/i-found-great-tumblr-today-perfectly.html

the others of this same school of design were the Ferrari Modulo, the Ferrari 512S, and the Alfa Romeo Carabo

above incredible photo from an incredible website: http://mi24.livejournal.com/556875.html