I, personally, never saw any marketing. The only way I knew it existed was because, many years ago, someone showed me Hugo's mp3mobile page, and I showed it to many other people. Then, when it started to mention that it might be commercially produced, I watched it a lot. I finally was able to afford one not too long after the MkIIs became available, past the initial queue. And I've read this BBS pretty much ever since, and some before.

In all that time, I never saw anything that might be considered marketing promoting or even implying that this thing existed. (I know that much of that time was pre-SB, but I can forgive the empeg guys, as, I'm sure, they weren't marketing guys, and they probably couldn't have kept up with a huge influx anyway. But SB should have promoted it a lot.) I would be interested in knowing anywhere that the RioCar was promoted.