Sorry this is long... I kinda have a lot to say. Im a new member of RFF, but I've been reading posts here for over a year.
Just some speculation...
1. The comment Jet/Cord made about "this could be our last leg"... since it was from the confessional of the leg in Austria, it could've been something said about the previous leg, something like, "we were really thinking like, 'this could be out last leg'". the promos always try to trick you, so you never know what they mean.
2. Jet/Cord are almost definitely W-Turned by somebody because they would've definitely went for the luggage (the more physical detour) and the only problem they could've had would be finding the hotel to deliver it to, but seeing as Zermatt shouldn't be that hard to navigate, I think they would've figured it out.
3. "Ganging up on the cowboys" - FT/BE made that comment but since they mentioned it in the promos, I don't think they will be the ones to U-turn Jet/Cord. I doubt that it will be Kent/Vyxsin because a Blind W-Turn is highly unlikely.
4. Flight Time seems to be having trouble but I don't think he messed up in the calculations because he says its crazy but he doesnt seem pissed or anything, he's actually kind of saying it in a humored way.
5. I don't think Kent/Vyxsin U-Turned the cowboys. It's possible Kent was threatening to ruin the cowboys because they were the ones W-Turned by the cowboys, and not the other way around, because I wouldn't find it so hard for the cowboys to get ahead of the goths. However, seeing from Kent's mood, it doesn't seem to be that way because we all know by now that Kent can be quite whiny.
6. Of course CBS would make it look like the cowboys are in trouble. They know how many fans there are and it is a great way for them to get viewers.
7. Yes, Gary is getting gas for the moped, and although that seems pretty easy, it can mess up his calculations if it's not exactly on the route they are following. Also, it may be far away or hard to find. You can see the gas station in the corner of cap 6 of promo 1A. Not sure if this is the speed bump or not, but it seems likely, because a full tank of gas should be able to take them the full 18 km, so the only way someone would need gas would be that they didn't get a full tank to start with.