I'm afraid that there's nothing to be done about the dust
that gets deposited on the rear hatch lower glass. if anything,
its presence is a feature, positive evidence of the excellent
aero design of the body.
The rear lower glass is right where two votexes separate.
I dont know the exact mechanism by which the dust "falls
out" of the air stream, but I would guess either just plain
dampness on the glass or perhaps some exotic electrostatic
condition.
I'm afraid that you're just going to have to bite the bullet on
this one.
Repeat after me, "Yes, dear."
