ultimately that will be a constalation of 30, 40, 50 of those spacecraft that are dispursed in the different regions of space and are on—call, available for customers say "to go over there. i have trouble." i need a pizza on the iss! we haven't really thought about the oven system of how we might keep the pizza warm... but we can do that! well i've seen the oven, it's strapped to the back. it's a little bigger. this is a pretty big deal. everything that is in orbit is going really really fast to make sure that as it falls towards the earth it continually misses it. changing course is not just a case of stopping and going in a different direction, because it will fall straight back to earth. no, this kind of manoeuvre needs maths and fuel, and lots of both. the early iterations that will have a finite set of fuel, but the next generations will be refuellable, or have soloar power, so they will be able to be recharged.