@CNN: Elon Musk says SpaceX aims to land at least two cargo ships on Mars in 2022 https://t.co/B0f9YrnTUm https://t.co/vm9Vp6R9UB

@CNN: Elon Musk says SpaceX aims to land at least two cargo ships on Mars in 2022 https://t.co/B0f9YrnTUm https://t.co/vm9Vp6R9UB