[lunarhighway]

@Katana

i think they mainly chose the boxfish, as it combines a boxy shape with a good drag quoefficient, and it's relative dimentions are similar to those of an mpv.

some of the most practical of todays cars, combine a big interior space with very modest exterior dimentions to aid parking etc. they achieve this by a raised roofline, so the seating position can be more upright and less legroom is required. computer designed engine bays vertually eliminate the need for a big nose section wich further enhances the boxy dimentions of those cars.

big luxury cars are often long and slender, and today, have also very good drag quoefficients. wich is easier to achieve as their relative dimentions are more akin to low drag shapes like the dolphin. also sportscars are more slender and potentionally aerodynamic, however fuel economy is not what these cars are bought for.

personally i think the only way to create a practical low drag car is to go for a trike layout with a single rear wheel, as this would allow for a massive boat tail, treardrop shape potential, without any substantial practicality problems. a well set up suspention combined with electronic traction and stability aids wich have become fairly common would eliminate any potential negative handling characteristics.... however this would require a lot of RND wich would eat away proffit... while virtually any car from the 20's till today would accept a "boxfish" bodywork