A SpaceX-Tesla merger has moved from rumour toward roadmap. On the day SpaceX began trading, the people around Elon Musk stopped waving the idea away.

SpaceX President Gwynne Shotwell did the floating. Asked about merger chatter by CNBC, she said a tie-up “might make Elon’s life a little easier.” She added that “there are synergies between Tesla and SpaceX in our futures.”

She hedged, too. “Right now I’m focused on keeping the lights on here,” Shotwell said, pointing to rockets, the space station, and broadband. The message was not now, but not never.

Why the SpaceX-Tesla merger talk turned serious

Two things changed this week. First, SpaceX went public at a $1.77tn valuation, making Musk the first trillionaire. Second, its filing said it may issue “significant equity” to fund deals.