I didn't remember at first but my addled brain seems to recall, not only was the bike Japanese but the old guy was too.
One I'm thinking of is, the scene opens and the bike moves right to left and there are close up shots of the bike & a rider wearing a full face helmet.
At the end the bike stops and the helmet comes off revealing the guy is about 70 - 75 years old and caucasian.
I remember the one you're thinking of too and as I recall it was a Geico commercial