Hehe you better ask Gareth about the clay Dan he got me started on it. Its a method of cleaning the paint, removing bug marks tar spots etc, it really cleans the paint bit like Tcutting does but without removing any paint finish.

Once its been clayed then you polish and then wax.

Have a look at the guides on this site they are very good:

http://www.polishedbliss.com/

Oh and still say you cant drive around everywhere with masking tape all over the car