checked North Carolina and Tennessee motorcycle laws; technically it IS legal if they have their own footrests, are seated behind the operator and are wearing DOT approved helmets.
The saddlebag supports are there, zoom the shot, they are different, but they are there.
The second rider looks like a kid but older than seven (age required in some states). I'm just glad that it isn't MY kid.
If it is real, regardless of the legality and adequate mods to the suspension and brakes, somehow this just doesn't look safe. Surprisingly, there are more laws about sidecars than stuff like this.
OWL