Sports sedans

All major sport car brands introduced 4 door sedans. Some are hatchbacks but the outer form is sedan like aerodynamic.

• Porsche Panamera
• Aston Martin Rapide
• Maserati Quattroporte (From Fiat which owns Ferrari too)
• Lamborghini Estoque (Not in market yet)

A car should be capable seating 4 people, be it sports car or normal, and backseats can be used for few other purposes too ;) A sedan form is most aerodynamic of them all.