text: please help me with my homework project: it has to do with the history of geometric shapes of cars? hi everyone. i was assigned a project to research the history of the shape of the car. it is a geometry assignment where i must write a persuasive essay on the profound impact geometric study has on cars (shapes affect efficiency...) it could possibly have an affect on consumers as shape gives a certain look. i also need to research the wind tunnel affect. any help will be greatly appreciated. the shapes of cars has changed to allow them to become more aerodynamic, which in turn allows them to use less gas because they can move through the air easier, thereby saving gas. the shape of the car also attracts consumers because the curves remind them of futuristic cars of the future from science fiction movies. the wind tunnel effect is simply how much air resistance the body of a car has.