SpaceX CEO Elon Musk believes that both the Texas and Florida Starship prototype rockets being developed by the private space company will fly “in 2 to three months,” which is an aggressive timeline considering the planned untethered flight of its Starhopper demonstration prototype missed its target of running this past week.

SpaceX is developing two Starship prototypes in parallel, at both its Texas and Florida facilities, in what is sometime referred to in the technology industry as a ‘bake-off.’ Both teams develop their own rockets independently, in an attempt to spur a sense of internal competition and potentially arrive at combined progress that wouldn’t be possible with just a single team working together on the task.

Earlier this month, Musk stated that the inaugural untethered test of its Starhopper (Hopper for short) Starship tech demo prototype would happen this past Tuesday, July 16. Those plans were derailed when a preliminary test firing of its engines resulted in a large fireball captured on camera by many local observers. Musk later said on Twitter that this was the result of a “post test fuel leak” but added that there was actually no significant damage to the sub-scale Starhopper itself.

The SpaceX CEO then continued with a new timeline for the untethered test, saying it should happen sometime this coming week instead. That’s definitely a required step for the company to take ahead of any test flights of the more complete Starhopper prototypes.

Those initial test will be sub-orbital flights, Musk said on Friday, with orbital tests to follow some “2 to 3 months” after those first test flights 2 to 3 months from today – so, that puts the earliest orbital test flights for Starship at just 4 to 6 months from now. Based on how Musk’s stated timelines match up with reality, you should definitely consider that an extremely optimistic assessment.

Musk also shared some detail about how Starship will launch – it’ll use a launch structure, which is currently under construction at another site, much like Falcon 9 and Falcon Heavy does today.