Buy every dip on teslaRoof solar and battery storage businesses just starting and they will be bigger than car business. This has much greater potential than Facebook google amazon as the markets Tesla is in are way bigger. Also it's a smartphone on wheels. The cost of the battery keeps coming down. Battery day coming up should be great in showing lead Tesla. Also check social media. No other brand has this much attention. Check LinkedIn. Tesla number one company people want to work at. That makes it very hard to compete!!