What Are These Two?

[Keep it stiff]

A couple of pictures I found in archives at work, they were taken in Paris in 1990, any idea what they are?

[Paulm4]

Props from Back to the future part 2?

[danoli777]

First one is the 1988 Audi Aztec concept car by Italdesign.

[angry jock]

Second one is the 1986 Citroen Zabrus by Bertone.