I have at least one friend in Chi who does not even have a driver's license any more. No need for it, because public transit is actually useable there (unlike much of the SF Bay Area where I live now). She will occasionally tag along with a friend when that friend goes to the store when she needs to pick up anything larger, but most of the time she just carries what she buys and walks or takes the bus.
Sounds like you have the best of both worlds--public transit or bike or walking for most use, and the truck when you need to carry big stuff or head outside the city to somewhere that mass transit doesn't really reach. I would say good-bye to the car!
(OK,
I would actually get a fun weekend-only car that I could also take to the track. But I may not be completely sane...
)
-soD