Ditto on both points. When I saw it, I had to do super thorough research and Google it one more time to see if it was for reals.
What struck me was the width of the contraption, 111' center of fuselage to center of fuselage, probably 140' from one outer truck to the other.
Doubt it could even turn on the ground when loaded with the STS, whole kit or just the orbiter, but they probably imagined it being loaded on whatever runway the shuttle landed then flying either direct as it probably would hold shit load of gas, probably could be AR'd to keep heading back direct to Florida with no fuel stops.
Lots of possibilities but lots of stuff to go wrong, KISS is usually the best COA.