Has SW used for modeling these cars?

Are you a student?

Are you familiar with Alias AutoStudio?

Never mind - I don't see that listed in Rex Fu's profile.

But I did see an email - why not contact him directly?

I'm not sure on which tool has been used but yes those can be made in SOLIDWORKS.

Here are some of others

Audi in SolidWorks

Gallardo In SolidWorks

And here is another free one Surface Modeling a Car from Matthew Perez