Yes, it's the standard IS200 towbar (You can see the Toyota badge somewhere in the pics)
The thing works by the sheer clamping pressure on the towball, which is leveraged when pusing the vertical arms apart from the top. The horizontal bar then folds flat-out and it has a latch to lock it. See the left pic and top pic for folded and mounted position. The part clamping on the towball are just 2 steel 2" pipe-ends that squeeze together very tightly (they are on the short arm of the "lever")
What keeps the bike from falling off the rack? The thick 1.75 sq mm electical wire! The bike just hangs with its frame on the two arms. You hang it like a coat, and then wrap the wires around the frame tightly (sorry I haven't shot a pic with the bike securely tightened). I don't know how you would call them, but one of these elastic ropes with a hook on each end could help securing the bike at the bottom. I've always got 2 of these in the trunk for securing luggage.
The thing is cheap, but mounting a towbar is pricey. I think they are €600 without fitting. No problem fitting them yourself, though. Takes an afternoon. For me it was a case of finding a second-hand Lexus with a towbar. And - ISes with automatic gearboxes usually don't have one, for an extra oil-cooler needs to be installed (presumably for towing trailers, not bikes).