The aft-body would offer the greatest drag reduction.You can see how streamlining allows huge bodies with no more drag than horribly-shaped tiny bodies.All-4 of the following bodies have identical drag
Here,you can see how Kamm et al. gets lower drag simply by extending the tail
Here,Volkswagen can dial in a variety of drag coefficients simply by altering the hatch area
This pocket of low pressure behind the Suzuki just sucks your tank dry
Filling the dark blue area behind the car with boat tail makes this drag go away.
