Of course, interior wins over exterior every time, but I do admit to some confusion as to why anyone bought the old ones.
I suspect that's why all those old vans were bought too -- you don't get a van for its styling. :)
In any case, I think exterior certainly comes into play at a subconscious level after looking at a bunch of different models for a month... and if two vehicles are otherwise very similar, I might opt for a slightly nicer exterior over, say, 3-level vs 2-level heated seats, or rain-sensing wipers. (On that note, I've never found a rain-sensing wiper system that I liked...)
For context, though, I'm in Vancouver, and as a city we're rather snobby about car appearances.