Hey Mr.QATAR2007...
I m really amazed to c ur 2nd point...

Wht did u mean by...

2- As there are many rudders here and there, you can escape from speed rudder by big cars rather than small cars
For example, if you drive small car for 100 km/h the same speed you can get for only 70 km/h with your big cars. Therefore, you can be safe from speed rudders