C-Max is about 300 pounds heavier than Prius v despite a smaller footprint, and has about the same amount of passengerspace though a bit less cargo room.
Then, providing they can reduce space launch costs by a large factor, they may be able to exploit new business opportunities, including passenger traffic to outer space.
According a joint press release, the two companies agreed that SpaceX will provide passenger transportation to private space stations to be built by Bigelow.