1. Watch the video, he goes inverted numerous times. It looks like the chair just keeps moving as it would if you were upside down. Most decent size arcades have a similar setup you could try if you have any around you. I think even Dave and Busters has them with star wars games to boot.
2. Those items are probably for different games. I would geuss racing sim as that looks like an e brake (or sequential shifter) and a standard shifter.
I hate car racing game. It's so dry. It's a dozen track over and over again. Star Wars mission is different. But for me, I can never have the above, I don't have the space, unless I setup that in the basement.
Also, I can't deal w/ those motion sickness from that Virtual Reality visor.
Besides, I were to buy one, I won't do DOF, I rather get this 720 deg. rotation toy: