"All good things must come to an end."As the U.S. auto industry is notoriously cyclical and fickle, automakers understand that phrase better than anyone. After enjoying a slow and steady rise in new-vehicle sales since the depths of the Great Recession, the U.S. market is now slowing, causing Wall Street to throw auto stocks like Ford Motor Company and General Motors to the curb.But investors should ignore that negative sentiment when it comes to Ferrari (NYSE: RACE).