it's the laws of aerodynamicsOriginally Posted by Spastik_Roach
Adding that 10mph to top speed will have doubled the drag and so they need to double the power.
THEN they need to make the chassis stronger to coep with the power, then the suspension stronger to cope with the weight of the chassis and the brakes bigger to slow the increasing weight. So it ends up in the spiral of diminished returns
You dont' get high speeds from light cars but you do get faster lap times and shorter journey times and a lot more fun ( though less bragging rights )