Elon Musk has unfortunately a very long track record of over-promising and under-delivering. Anything he say should be taken with the proverbial grain of salt.

Elon Musk has unfortunately a very long track record of over-promising and under-delivering. Anything he say should be taken with the proverbial grain of salt. I don't think he is a complete fraud, but I would not bet my shirt on his Mark colonization project.