Using some numbers I found on the intarwebz and some I just made up...

An A320-200 in cruise burns 3125 liters/hour. Converted to American, that's 3375 quarts or 843.75 gallons/hour.

Now assume in that hour, the plane travels 500 miles. 500 miles on 843.75 gallons = 0.593 MPG. Which doesn't sound very good but... suppose the aeroplanie in question has 143 seats which the web claims is typical (and every seat has a butt in it). Multiply that last number by 143 and you get 84.75 passenger-miles per gallon.

An Ottomobile getting 30 MPG (assume highway driving) with 2 pax in it would be getting 60 passenger-miles per gallon, which obviously doesn't compare well with the airplane.

Conversely, a Tesla model 3 gets 142 MPGe (a made-up number, of course) so with 2 pax in it, you'd effectively get almost 300 passenger-miles per gallon.

The takeaway? Clearly, Tesla needs to start making airplanes.

HR consultant, Yoyodyne Propulsion Systems, Inc.