``The largest category of consumer debt is student loan debt. Even at the peak of the last debt bubble, consumer debt totaled roughly $2.5 trillion. While student debt makes up about $1.4 trillion of the consumer debt here, auto debt is above $1 trillion. We've also seen a large rise in subprime auto debt suggesting that people are borrowing beyond their means to consume. Delinquencies are also rising suggesting any tiny slip up in the overall economy and this credit bubble can burst too.''