Be careful about believing everything you see from these so called experts. I watched the first video that OP posted. Lots of innacuracies. For example, he said it takes 317 gallons of fuel for an A-320 to fly from NY to DC. Well... the 320 burns about 250 gallons of fuel per hour while at idle or taxiing. This doesn't include any fuel which is used by the APU (50 gal/hr). A typical airliner will take anywhere from 5-15 minutes to go from engine light off to airborne, depending on how far it has to taxi and how busy the airport is. So assuming 10 minutes of engine usage at idle, that is over 40 gallons used before the aircraft even pulls into the runway. Usually the APU is online well before passengers even board, so realistically the number is closer to 80 gallons. Add another 40 gallons on the back end of the flight... you get the picture. Add in the roughly 500 gallons it would take to actually fly the plane for half an hour (again, I'm being conservative here because this assumes a direct flight with no holding patterns or vectoring)... you get a number more than twice what he claims in the video.

I'm also very fun at parties.