I've more often heard what Arizona legalized referred to as "lane filtering", passing stopped vehicles, which IMO is the one that makes the most sense. Still have to keep an eye out for car doors opening, vehicles switching lanes, large dogs hanging out of car windows, etc. same as with bicycling. I hope the precedent continues and that it becomes legal (and standardized) in more states! I have a few riding friends from Southeast Asia, so before any state legalized it they were doing it stateside anyway on their scooters. The first time I saw them filter to the front of a red light (illegal) to turn right on red (legal) and not have to wait for the light to change and traffic to move, my eyes lit up with the temptation of realizing that some of the time saving things you can legally do on a bicycle in cities... could also be applied to motorcycles!
I'm a party pooper and not a fan of actual lane splitting in moving traffic like CA has. I'm on the road in SoCal right now and have been tempted by it 0 times. With the wide highway lanes it sounds fine for making your way forward in slower traffic, but with distracted drivers and the reality that very few drivers check their mirrors and maintain 360 degree situational awareness, it ends up being sketchy. Then for legality, it's not well defined and because of that there's more rumors than there are facts about what you can and cannot do, and many CA residents
still don't know it's legal, so they don't expect it. There isn't a speed limit on CA's lane splitting, just a pamphlet from CHP warning that risk increases as speed difference increases with nearby vehicles. That leaves it up to law enforcement to have the discretion of deciding if a motorcyclist lane splitting at 40 mph when traffic is going 30 mph is "unsafe for conditions" or not. The big issues are motorcycles moving much faster than traffic around them, and lane changes. Would be curious to hear what the current stats are, but it used to be that
nearly 1/6 motorcycle accidents reported by CHP involved lane splitting.
On the CT125, you gotta pull back the vapor lock to trigger the flow of fuel at those stations, which means filling is a two handed operation the entire time. The Costco pumps also have a lower flow rate; I usually fill the tank at the lowest rate I can squeeze the nozzle at to prevent spillage.
There are some very crude nicknames out there for those vapor recovery systems! Instead of holding the seal boot with your hand, I have seen many motorcyclists carry clips that compress the boot, or for the ones that work off suction there is a small hole in the boot that you can cover to have the pump dispense fuel. I agree that they're a good thing for the environment, but it's annoying that they didn't do enough R&D to come up with something that "just works" for all vehicles and fuel canisters. For motorcyclists it now means using weird workarounds, getting residual fuel on your hand or glove pulling back the seal boot, and potentially increasing the risk of spills since the boot gets in the way of seeing how full the tank is.