Oscar and ljbike,
You are both right! The whirring of the wheels on the road, driven by the silent but insistent metronome of pedal cadence often become, in my head, depending on mood, "Blue Danube", the "Moldau", "Ride of the Valkyries", or any of several others chart toppers. Can't help it. I was listening to this stuff even before there was Elvis. Though now that the suggestion has been made (sorry, Technogirl) I think "Dancing Queen" may show up in the program in the right circumstances. :-)
Regards,
Raymond