From the video:

Range: 125 miles all electric

       500 miles with hybrid system (electric + conventional turbo prop)

Heart Aerospace (YC W19) just flew the largest electric airplane ever flown — a 100-foot wingspan, a takeoff weight of 25,000 pounds, and $5 of electricity to get it off the ground.

Thought this was a great watch, as a first time founder myself!

Hope it's accurate. Sounds good to be true.