Electric Livewire - Nathan Phillips - Redline
In the movie Redline, Nathan Phillips wears a pair of black Electric Livewire sunglasses. These sporty glasses can clearly be seen in the last scene of the movie, the race between Nathan Phillips and Nadia Bjorlin (who wears Chanel 5080 sunglasses) in the Ferrari Enzo and the Koenigsegg CCX supercars.
The Livewire sunglasses are unfortunately not produced anymore by Electric, so they are difficult to find. A pair that looks slightly similar is the Versace 2040, worn by Val Kilmer in the movie MacGruber.
Reference: Electric Livewire, black frame