Classics Sell While Current Models Lag

Last week a 1936 Bugatti sold for $30M at auction. What is prompting the rise in vlue of classic cars while the current auto market is sluggish and looks to remain so for the forseeable future?

Is there a feeling that the automobile as an American icon is somehow failing and there may be a limitied number of classics to get our hands on? Or is there such a miserable investment market that the high rollers are willing to gamble on classic cars since the traditional markets have been performing poorly?

I am curious if anyone has any insight.