Otto Unveils Plans For a Zero-Emissions Alternative to the Piston-Powered Celera
The U.S. company will power a new version of its diesel-fueled Celera 500L with either electricity or hydrogen.
Otto Aviation Celera 500L
The first version of Otto Aviation's Celera 500L will be powered by diesel, but the company says an electric or hydrogen version could follow. (Photo: Otto Aviation)