In the Coupe or Gransport, you can easily fit 2 carry-bags (the kind with flip-out legs .... you guys all walk to play 18 holes, right?) in the trunk.
One bags by itself fits easily without taking the metal-woods out ... you put the clubheads into the left-side cavity first, then swing the foot of the bag up and into the right side of the trunk.
For 2 bags, I take the metal woods out of both bags. Put the grip ends of those clubs into the bottom of the left side cavity first ...... spread them out on the bottom of the trunk so they take up less room, then put both bags in on top of them with the irons into the left side cavity and the feet of the two bags into the right side of the trunk.
Surpisingly, there is still room for 2 pairs of shoes and maybe a small gym bag. If you don't have the spare tire option, you can remove the cover to that cavity, leave it home, and then have room for a piece of soft luggage under the bags.
If you have the 9 inch or larger staff bag and it's filled with a box of cigars, 8 cans of beer, a flask, 3 dozen golf balls, a cell phone, a PDA, two umbrellas, bandaids, 2 sweaters from the last times you played golf and forgot to take them out when you got home, and a large Costco-sized bottle of SPF45.....you'll need to take your Suburban to the golf course. Hopefully, you're not in the foursome in front of me.