I am creating a gravel (12mm) driveway at the front of the house to park my car on. I have already excavated all the lawn and i am currently left with an area of soil. I am unsure as to the next process. I have already bought heavy duty landscape fabric to go under the gravel to stop the weeds coming through. However, i am worried of creating hollow (groove) areas where the car drives over. Do i put something between the fabric and soil? Do i use a whacker to condense the soil? Any help is much appreciated. Thanks