How much more demand can low interest rates pull forward? It appears that while mortgage demand may be low (after a flurry earlier in the recovery), auto loans are going strong. But whatโ€™s interesting about these loans is that they get longer and longer. People are pulling more and more of their future incomes into the present to buy vehicles they canโ€™t otherwise afford.

It’s not surprising Americans are hard pressed to afford the necessities. On the chart below youโ€™ll see that in inflation adjusted terms, incomes peaked in 2009 and have dropped rapidly since 2007. The recent report on consumer spending in April turned up a surprise drop of 0.1% compared to the month before. If low interest rates are simply pulling future demand into the present, and incomes are stagnating, itโ€™s hard to see where future productivity gains will be generated in an economy that relies heavily on consumer spending to drive GDP growth.

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