Impressively, he actually said "single digit hours" between flights for the lower stages. See "turnaround time": http://www.popularmechanics.com/science/space/r

Impressively, he actually said "single digit hours" between flights for the lower stages. See "turnaround time": http://www.popularmechanics.com/science/space/rockets/elon-musk-on-spacexs-reusable-rocket-plans-6653023 http://www.popularmechanics.com/science/space/rockets/elon-m...