http://www.businessinsider.com/hybrid-bike-rowing-machine-rowbike-2017-10
https://www.rowbike.com/
origin - http://www.pipiscrew.com/2017/10/hybrid-between-a-bike-and-a-rowing-machine-that-works-out-your-abs-and-back/ hybrid-between-a-bike-and-a-rowing-machine-that-works-out-your-abs-and-back