On Sunday, August 16, 2020 at 6:19:27 PM UTC-7, wrote:

If you mean the fins on either side of the nose clearly marked "sensor", likely angle of attack vanes. Not very useful when the motor is running...
Not thinking about the sensor fin.

at 0:25 in the video. The horizontal line mid screen a few inches below the canopy. Looks like a transition between a flatish underbelly and vertical cockpit upper side. Looks like the chines under a boat?

I wonder if they are also accepting deposits for this concept.