***** I wouldn't say every car now. Look at basically any mid size to full size sedan and they don't have that teardrop shape. The C7 Corvette has a drag coefficient of 0.29 which is really good and it doesn't resemble a Prius.
if done right, the tear drop shape is amazing looking. a lot of cars fuck it up, but when the car has aggressive fronts and backs, it can really compliment the whole car and make the tear drop shape look sick. thats just my opinion.