American dealers were responsible for the bulk of the selloff.
About 30 American and international dealers will show works by emerging artists.
The first of them could reach American dealers in less than three years, news reports and industry analysts said this week.
"American and French dealers have not fared much better," he said.
The company said it expected to offer a version of the warranties next year at all its American dealers.
The report did little to help the dollar overseas, traders there said, but American dealers took a different view.
The point is that the big American dealers exert a considerable influence on the world market situation.
American dealers echoed the strong patriotism seen around the country over the last week and a half.
It is up to the American dealer whether to pass on the savings to customers.
Most American dealers have received only one or two of the cars thus far, and a lot are keeping them for themselves.