[lunarhighway]

i wonder if this Coanda Effect could be used to make boxy cars more aerodynamic. a lot of cars wich don't have a boat tail design (bad) have rounded edges at the sides as well (bad) but perhaps a vertical lip spoiler or even a thick strip could cause the air to separate cleanly just as it went beyond the bend so there's a clean separation, but not parallel to the body panels but angeled inwards as if there would have been a boattail

maybe that happenes natualally to a certain extend why round edges are still used, but i think it's got more to do with safety regulations and resign language than good aero