Hmm..

I just drove from Atlanta, Georgia to Portland, Oregon this past fall.. Had my Empeg the entire time, and can honestly say that over the entire trip, I never heard the same song twice.

However, I still want to get a tuner.
Why?
Because there are times when I (at least) need something 'fresh' (besides the point 'fresh' may be from the 60-70's..) It may be because I hear a human voice..
Sometimes I like to listen just to see how Classic Rock stations do things differently in different parts of the country. (That may be because I used to work in radio..)
In either case, I often (2x a year?) drive between Atlanta and Denver (1700 miles.. 2738 km for those across the pond.) and find myself channel surfing, at least for a short while, every now and then.. even with my Empeg. (I can do that now, I'm using my radio's aux-in.. Once I get my Empeg really installed, however..)

Me.