I would though your new car would not needto be clayed yet?
Au contraire.
New cars come chalk full of tiny metal particles (rail dust from rail transport), as well as environmental fallout. Using a clay bar on a brand new car is one of the first things I'd do. Why? Because it'll pull all of the contaminants out, leaving a perfectly smooth surface to use a nice polymer sealant (or old-skool wax, if you prefer).
If you ever want a good example of why clay barring a new car is a good idea, go to a dealership that doesn't have a lot of turnover, and find a white car. Look carefully at the hood as well as the doors, for tiny little rust specs. That is embedded rail dust that has started to oxidize. Only a clay bar will get these out - washing, polishing, and even light sanding (not recommended!) will NOT get these out, as the rail dust is partially embedded in the paint itself. It needs the clay to pull it out, literally!
www.autopia.org <-- the best resource for car cleaning and detailing you will ever find.