any one drive a motor cycle, the difference between 45 and 65 is HUGE.. if you don't have a cycle just use your had out the window..
Even the difference between 50 and 60 is pretty big.. someone used the term exponential.. not exponential.. but gets the point across.
Now if you do full aero mods like the aerocivic, there can be far less disturbance of the air and get far less resistance at those upper speeds.
This proves that the cars are very poorly aerodynamically designed.. even if they look slick there usually not very slick to the wind.. its kind of shocking how some cars look very correct but are so far off..
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