There was some concern recently that Elon Musk wouldn’t be attending Guadalajara for the 2016 International Astronautical Congress, where SpaceX had scheduled to reveal the technical construct transporting humans to Mars for colonisation. The reason for this concern was the "fast fire" that occurred during a static fire test of the AMOS-6 mission, which was carrying Facebook’s internet.org satellite.
The satellite was lost, Mark Zuckerberg was "disappointed", and the damage to the site where the incident occurred was extensive. Many thought since this is the second vessel SpaceX have lost in 15 months and given the complexity of the investigation into the root cause, Musk would prioritise investigation and cancel his presentation. But there he was.