Elon Musk and Boeing: The great Mars rocket rivalry

First came this tweet, from the CEO of Boeing:

From the linked article:

Boeing CEO Dennis Muilenburg made a bold claim about his company’s chances to put a human on Mars before Elon Musk, who has high-profile plans of his own with SpaceX.

On CNBC Thursday morning, host Jim Cramer asked Muilenburg whether he or Musk would “get a man on Mars first.”

“Eventually we’re going to go to Mars and I firmly believe the first person that sets foot on Mars will get there on a Boeing rocket,” Muilenburg responded.

Now comes my favorite part. Here’s the reply tweet from Elon Musk:

Bring it!