You missed the point, what you say is to liquidate inventory, which is what most struggling retailers do. But in this particular case they don't own any inventory, even worse they owe their suppliers $65,000 per store in addition, so all proceeds would just pay the suppliers (that are financed by banks).
So this fiscal year per 10-k they have 1.038B in contractural obligations, which is very close to last fiscal years cash flow (before stock purchases). If they want to open stores, remodel or buy shares they will need to incur additional debt. They can do so with their $1.25B line of credit (more than half of which is used), issue more debt or sell shares.
Alternatively they can stop opening more stores and stop share repurchases, making them rely on same store sales growth to keep EPS growing.
track the average age of cars on the road. I think we are at an inflection point. this will hurt azo sales. Also high gas prices will hurt and as always competition will eat into margins. AZO is not apple.