There's a lot of cars faster than the Boxster on a 0-60 or 1/4 mile run. Thing is, there's not many that I'd really want to own. He may be really hopped up about his new purchase and all, but at the end of the day, it's just a boring family sedan with a big engine. IMHO, how boring.
Tell him to take your car for a drive one day when the weather is nice out....tell him to press the button to see the top drop down to let the sun shine in....let him wind out the engine to full revs to hear the wonderful sound of the flat 6 and take some fun curves. Let him see all the people in boring family sedan cars at stoplights look over at him with smiling faces and looks of envy, and then tell him, "yeah...I bet you want to "take" my car...take my car HOME that is!" After that drive, betcha he wont' be so hopped up about his Chrysler anymore. Instead, he'll start coveting yours