We have the Roadster and an '07 Hyundai Tucson.

The Crossfire is the daily driver right now and even gets our groceries comfortably (just two of us)

The Tucson is wonderful for moving more people and building supplies (lumber, furniture, everything)
Tucson is the daily driver come October here in Calgary though.

The hardest part of owning two cars is that we have a townhouse garage, so it's 2-cars long. Juggling them around is a pain in the butt.
I think the 2nd hardest will be seeing the Crossfire under a sheet in the back of the garage for 5 months!

Insuring only one at a time is a big break for us though, since they both cost about the same to have insured.