Anything that would replace the back seat of the car that generates thrust downward I would expect would cut into area that would be allocated for battery. So l

Anything that would replace the back seat of the car that generates thrust downward I would expect would cut into area that would be allocated for battery. So less area for battery but a major demand for the battery being added? Sounds like wishful thinking to me unless it’s just a few USB fans with spaceX written on the side of them facing down.