This excerpt taken from the AN 10-K filed Feb 17, 2010.
Used Vehicle Inventories
Used vehicle inventories were $221.8 million or 41 days supply at December 31, 2009, compared to $140.1 million or 30 days at December 31, 2008. We reduced our used vehicle inventories and days supply during 2008 to manage cash flow and to mitigate our exposure to the volatility of the used vehicle market by enabling us to react more quickly to consumer demand. During the first half of 2009, we maintained relatively low levels of used vehicle inventory in response to the economic downturn. In the second half of 2009, we increased our used vehicle inventory in expectation of increased demand.