Aerodynamic wiper system courtesy of Jason Torchinsky at Jalopnik.

it seems height of a normal wiper is high b/c its needs to be structurally tough enough given it slides in rotating movement by moving the bottom end.

instead the wiper can be a thin strip of rubber that goes across the windshield left end to right end, strip is pulled/pushed by its ends with a motor on one end that pushes/pulls by motor going up and down a rail located around the pillar., possibly between the "glass" and the pillar(window would be few millimeters narrower). the strip may not be perfectly straight across the windshield if using only one motor on one side, rails exist on both sides, and thats fine.

another design: the wiper is vertically placed, so rails are at top and bottom of windhield, wiper moves left to right. the distance between top and bottom of windshield changes as the wiper goes left to right across windhwild, so the thin film should instead be a reactanglar prism(for more aredynamic shape vs cyilnder, wiper film under it is flat), film at bottom of a rails system that allows smaller rectangle to slide inside the larger one to become shorter and vice versa when there is more length betwen top and bottom of windhield. larger one is at bottom smaller on top because there is more of a aredynamic dead zone toward the bottom.

the pic one the right:

the wiping film (in red) needs to be flexible enough to bend to slide over wheels (in blue circles) to extend the smaller rectangle housing (in black), which is inside the larger housing (in blue). the smaller housing is attached to top end of the wiping strip, and it is attached to the rail at top of windshield, so that as it moves left to right, the smaller ousing extends while also extending wiper strip outward and down to contact the windshields surface. when contracting into the larger housing, strip rolls over wheels to be stored inside.

when smaller housing is contracted into bigger one, the end of the strip toward the cars front end will extend into the hood area. if this is a problem despite the silm being pretty thin, strip can fold around other objects with wheels just like in the wiper housings.

the pic at the left: the top of housings are bullet shaped (windshield surface is in black) for aerodynamics.

theres also this design for the system to be usable in other cars which wont have space for thing strip to move around in, which could be sold to other car manufacturers or as aftermarket kit: its the same as previous design except the larger housing is vertically larger to accommodate the strip being folded inside the housing

the rest should be as in normal wipers, for ex. wiper needs to be bent so wiping film/blade is always in contact with windshield surface across the curved windshield.