1963 Alfa Romeo TZ-1 - 1

It did. For $302,500.

I just read this about the chopped tail: Aiding the TZ project in its quest for aerodynamic performance was the treatment of the rear bodywork. Incorporating the research of Dr. Wunibald Kamm, the TZ used an approach called “coda tronca,” otherwise known as the Kamm tail. For ultimate streamlining, the principle is that an aircraft-like, extended tail is optimal. Since that is not practical for an automobile, Dr. Kamm discovered that there is surprisingly little increase in drag by simply chopping it at an angle.

Heheh very true. That is super interesting background about "coda tronca", I always wondered why they called it the Spada Codatronca! And now I understand completely.. pretty cool!