Newslink: SpaceX to Build 'Mini BFR' Version of Mars Rocket to Fly on Falcon 9, Elon Musk Says
SpaceX aims to start flight-testing key design components of its Mars-settling spaceship next year, company founder and CEO Elon Musk said.
https://www.space.com/42375-spacex-mini-bfr-launch-on-falcon-9.html