Why is this returning me all columns

I'm trying to get only 3 columns and it's returning me everything.

public JsonResults GetAll()
{
   var q = _db.Cars;

   return Json(new
     {
       data = q
       .Select(x=> mew Cars()
        {
           CarMake = x.Make,
           CarModel = x.Model
         }) 

     });
}

It's returning me everything from the Cars Table, make, model, year, color, engine, etc. I only want Make and Model to be returned