Since 2009, roughly 1/3 of all new auto-loans have been subprime. That in of itself is bad, but we are now discovering that the industry in general has a problem with fraud (shades of the Housing Bubble) as well.
Stocks are MOST susceptible to violent drops (or even Crashes) when illusions are shattered. The illusion of major changes to the US economy is about to be shattered.
The fact that stocks have rallied to new all-time-highs based on this is like someone winning a Olympic Gold medal while hopping themselves up on every steroid imaginable.