Want 92% lower emissions, 43% lower fuel costs, greater range, shorter runways? Meet a new design concept - the Phantom 3500 executive jet by Otto Aerospace.

ottoaerospace.com: Aircraft | Otto Aerospace

Flexjet has ordered 300 of them, even though the first one is yet to fly.

Their basic idea is to improve the aerodynamics and reduce the weight - giving a huge improvement in flight efficiency. They then combine that with SAF fuels - higher costs but lower emissions - to greatly reduce emissions.

Their idea is to eliminate windows, greatly reducing drag and weight, by instead using external cameras and interior screens for passengers. They then add expanded use of carbon fiber materials for further weight reduction. That also permits a new, teardrop, body shape. The new design is striking, as shown in the link above.

Seems like a better approach than hybrid-electric airplanes.

I sure hope it works

It should. Howard Hughes used the same basic concepts in his 1935 H1 aircraft racer to set new land speed records. Also the laminar flow wings of the P-51 mustang in WWII first permitted fighter protection all the way to Berlin and back. The problems might be in the details.