Rinspeed already brought us swimming cars and cars that can feel. For this years IAA 2005 in Frankfurt they just go for a very classy Porsche Carrera tuning called simply the Indy.

Swiss Tuning Company Rinspeed pays tribute to the Indianapolis race circuit with the Rinspeed Indy. The Indy is a repainted Porsche 997 in the extraordinary color white metallic.
The four way adjustable coil-over suspension with individual height and stiffness settings lower the Rinspeed Indy by 35mm (1.4"). The front, side and rear skirts are also especially designed for the Indy. Rinspeed also added an enhanced brake system.
The Indy is just very very pretty. I am sure it is damn fast too.

More details on the Rinspeed site.