how to model a car using solidwork by importing blue print ?

First a little u must to learn how to setting up blueprints of a car in solidWorks so this tutorial will help u to learn that

https://grabcad.com/questions/how-to-setting-up-blueprints-in-solidworks

nd after that u can start ur modeling nd to leanr that so see this tutorial

https://grabcad.com/questions/how-to-make-ferrari-fxx-body-in-solidworks--1