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Note 7 - Floor Plan Notes Payable and Lines of Credit (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Assets Pledged As Collateral [Table Text Block] |
|  | December 31, |
|  | 2018 |  |  | 2017 |
Inventories, new and used vehicles at cost based on specific identification, net of allowance |  | $ | 1,068,003 |  |  | $ | 818,066 |
Vehicle sale related accounts receivable |  |  | 100,013 |  |  |  | 104,779 |
Total |  | $ | 1,168,016 |  |  | $ | 922,845 |
Floor plan notes payable related to vehicles |  | $ | 1,023,019 |  |  | $ | 778,561 |

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