Sharp Nemesis
 
DR 9 0
Nemesis
 

The Sharp DR 90 Nemesis is a Formula One racing aircraft designed by Jon Sharp and built at the Mojave Airport by the Nemesis Air Racing Team. 

The Nemesis originated as an attempt by Jon Sharp to build a Shoestring racer, with composite skins over a steel frame. Along the way, Dan Bond convinced him to use an airfoil with extensive laminar flow and finally, Steve Ericson helped Jon design a sleeker, all composite airframe. All that remains of the original “plastic Shoestring” is the horizontal tail. The steel space frame was sold to Dan Gilbert and became the guts of his Shadow Formula One air racer. Although Shadow looks much like Nemesis it is fabricated differently and has a completely different wing.

The success of the aircraft led Jon Sharp to design a follow-on type, the Nemesis NXT

Source: Wikipedia