Let's see, I'll start: cars at high speeds do have superior (as in, better) drag characteristics than bikes, particularly supersports. The 'busa is a good example of what a bike designed to lower air drag looks like. Second, the relatively low pressure inside the car compared to the very high pressure of air outside the car would have the effect - although perhaps not literal - of sucking the windows into the car. And man, did it look like they were about to.
Go on now, explain how much smarter you are. Or are you just being a jerk?
Superior coefficient of drag doesn't necessarily mean superior aerodynamics. You have to factor in frontal area, and you'll find the numbers swing back in favour of the motorcycle. Of course this doesn't include elements contributing to lift or downforce... the latter of which creates even more aerodynamic drag.
The simple truth is that bikes don't have the crazy amount of power it takes to overcome drag at high velocity. They don't have more drag, they just don't have enough power. Double the speed and you need quadruple the power.. but you've also quadrupled the drag.