I'm bike-only but I live and work in the city, so it's fairly easy.
I've lived in this town for 6 years, though, and there are still suburbs I've never seen/heard of. It's kind of odd since several of my coworkers drive in from just these suburbs every day, and look at me like I'm crazy when I say things like "where's linthicum?"
Anyway, now a coworker has invited me to an event at her house, a good 40 mi from here. I'm willing to ride it, but I get this terrible chill through my spine any time I ride outside the beltway, and I don't really trust suburban drivers-- they don't know how to deal with us.
Any of you all suburbanites? How do you do it? Tips?