new car odometer

How many miles can be on a car for it still to sold as "new"? (I live
in California, if that makes a difference.)

I am looking at a new A3 with 55 miles already on the odometer. This is
at a big dealership, and so I assume new cars are delivered directly to
their doorstep. So is the 55 miles from test drives?

I know this borders on OCD, but my previous new cars had 10 miles each,
and 55 sounds not quite virginal.

Thanks.


Bill