The 2006 Cadillac XLR-V fails to impress in terms of cargo capacity. Consider that with the top up, the long but shallow trunk provides 11.6 cubic-feet of cargo room, but space shrinks to 4.4 cubic-feet with the top stowed. But, really, who buys a $100,000 performance convertible for weekly runs to the local megastore in search of provisions for a family of eight? Chances are, not many, so room for an overnight bag should be enough for most.