After CarParts.com reported its quarterly results last month, executives at the company, which sells replacement auto parts, did what many of their ilk do: They held a conference call with Wall Street analysts, fielding questions about inventory levels, profit margins and corporate strategy. Roughly 30 minutes later, the same executives were on Clubhouse, hosting an entirely different kind of audience. Their 2,000 or so guests had gathered at the buzzy online meeting spot to learn about the company. Their questions were far more straightforward. How did the business work? Why was CarParts.com able to offer lower prices than brick-and-mortar rivals? Were CarParts.com shares worth buying?