SpaceX AI computing and Starlink could become enormous businesses, while a Tesla-SpaceX merger would reshape the whole Musk ecosystem. But Tesla’s Robotaxi execution is the biggest near-term test because expectations are already embedded in its valuation.

If Robotaxi can scale safely, gain regulatory acceptance and demonstrate attractive unit economics, Tesla has a credible path beyond being primarily an EV manufacturer. If execution repeatedly falls short, investors may start questioning how much of Tesla’s future AI and autonomy potential should be priced in today.

For me, actual Robotaxi deployment matters more than another ambitious announcement. Execution is what turns the narrative into cash flow.