How much air pressure and track length would you need to accelerate a craft like this to supersonic speeds? ponders. Come to think of it, would that even be phy

How much air pressure and track length would you need to accelerate a craft like this to supersonic speeds? ponders. Come to think of it, would that even be physically possible? My understanding of the "sonic boom" phenomenon is that it involves the craft breaking through a zone of high air pressure that has accumulated in front of it... Surely this wouldn't be possible if the pressure itself were propelling the craft. My (uninformed) guess would be that supersonic speeds are attainable with this kind of system, but probably unfeasible, and crafts probably wouldn't experience the sonic boom phenomenon.