I'm 'that kid' from the Porsche commercial and finally have the cash for the car some many of use dream about. One more hurdle. What is a good convincing argument to convince my wife that a $90,000 car is a good idea? The only thing I have in my favor is she said yes to the new car, but I neglected to mention the price. Or, should I just show up with the car and drop the price bomb after?