Yeah, I realize we're not able to just strap on to one of these then shoot ourselves to the moon. I'm guessing though, that stage from earth orbit to moon orbit using the EM would require the thing to be "on" almost the entire time. Building thrust half way, maybe one hour of those 4 hours disengaged then burning retrograde the final hour to again build up thrust to slow down. Unless it fires up fast like a traditional rocket... but I can't see it working like that. If they can figure out how to get a big burst though, that would be interesting, game changer for sure.