The body designs of most modern vehicles look more "puffed out" that vehicle bodies of the 70's, 80's,90's. The designs of those eras didn't have flat areas, but, on the whole, they look flatter than modern cars. Is there some technological reason for the change in body style? Or is it just fashion?
Maybe car bodies follow the trends of human bodies - the shape of the the general population is getting puffier.