Yes, its perfectly feasible. Panel track will curve easily and stay put with moderate curvature. Just a nudge with the forks will see it done. The only time its a pain is for really tight curves as it starts to take on the look of a 50p bit at the joints. I can't imagine their curve in the car park being very tight because of the loco's shear size. As it is, you can see the guys there are worried about flange climb, continually looking under the engine, you can also hear the flanges biting at the outer rail, trying to climb out in the video. Grease the high rail running face is a good plan!