Still haven't seen one on the road other than mine - and I'm in the area with the highest volume VW dealer in the US. There are VWs everywhere down here. Just no Arteons. Not that I'm complaining. I like having a unicorn.
On my first road trip up to Disney World last week - I found out just how unfamiliar the Arteon is. Every resort valet I pulled up to asked about the car, circled the car, people waiting for their cars or pulling up were looking at it, some asked what it was, quite a few were taking photos with their phones. Not just once or twice - but dozens of times. Often it ended up sitting in the valet area for long periods of time while other valets would check it out. At Animal Kingdom Lodge, I pulled up around noon, left at the valet, after chatting with them about 10 minutes about the car and color, then went into the hotel, had lunch, took a bus to Animal Kingdom park, spent the day there, caught a bus back at 7pm, to find my car still sitting at the valet stand, pulled over to the side. The valet said so many people kept walking around it and taking phone photos they decided to just leave it there rather than pull it over to the valet lot. Most cars kept up front at the valet are high-dollar vehicles where the driver tips to have their car kept in the 'exclusive' up-front area.
Now I know much has to do with the color, which stands out for sure - but also that it was on a car that was not familiar to almost anyone. The lines on the car look great in person, so it does attract attention anyway, and in the yellow it really stands out...but I still found it quite humorous and a little surprising just how many comments, photos, etc the car was getting. While I love having something unique, I'd say VW is a little stupid not advertising this car more heavily (other than an 'online' ad video that was linked here once, I've not seen a single Arteon ad online, on TV, or in print...so how they expect anyone to know the car exists, I truly don't know!