It was unveiled at the March 2015 Geneva Motor Show .
The Koenigsegg Regera is a limited production , plug - in hybrid sports car manufactured by Swedish automotive manufacturer Koenigsegg .
Koenigsegg Regera was unveiled at the March 2015 Geneva Motor Show .
The Koenigsegg Regera is a limited production , plug - in hybrid sports car manufactured by Swedish automotive manufacturer Koenigsegg .