How to reduce lift and drag in cars

[Signori]

Hi i am new in this forum, and i have a paper on aerodynamics, which is a bit general...

Basically the paper is on how to affect lift and drag in automotives...

could you help me with this...

thanks

 

[jaap de vries]

With cars you usually want negative lift. (for traction) and minimum drag for obvious reasons. The is a wealth of information online start with wikkipedia.