Although this isn't something I'd do in a sports car, I could see the drive for this. I've seen several Mercedes CLS 600 cars drivign around with a Louis Vuitton interior, and the Gucci print as well.
It's more of an ostentacious maneuver than anything else... basically the equivalent of paying $50 a gallon for Ralph Lauren interior paint for your house, when you have Behr for $20.
Having said that, in the correct application, and suitable vehicle, it's a very clean look.
And the honeys dig it, too. Especially if their purse matches.