Ok, not to be a smart pants but how can you worry about bugs on your bike
and gas mileage at the same time?? The hard facts here are first anything on
TOP of your car is going to cost you mileage out the whazoo and secondly you
won't NEED a "bra" if you carry your bike INSIDE you car or in a closed trailer.

All you're doing here, mate is spending money to accomplish........nothing.....
except spending more money.