Somebody must have raised some money at some time in the past, as the 7 million in net book value of property on the assets side is matched mainly by net worth and an unsecured note of 1.5 million.

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The shares have climbed more than 35% since, yet still trade at a discount of 23% to book value, the difference, or net worth, between its assets and its liabilities.

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His formula involves adding two main variables: the dealership's assets minus overall debt (also called "net tangible book value"), plus what Hall calls the "blue sky" value, equal to the dealer's pretax income times some multiple between one and six, depending on the health of the operation.

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