When combined with the acceleration they are indistinguishable. I got a chance to ride in the full motion simulator at NASA Ames and it used this 'trick' to recenter itself after it had made a left or right motion. Inside you felt nothing, like the system was unmoving but outside it was moving the flight pod back to the center of motion so that it had maximum reach for the next maneuver.

I'm sure the TK folks could manage it. The trick is that the 'tilt' of the car on the linear motor would add an additional degree of freedom to deal with. And yet it would be expensive but they seem to have already crossed that bridge :-)