CAR TROUBLE DEPT.: Score one for women drivers everywhere! “Desperate Housewives” star FELICITY HUFFMAN desperately wanted to take hubby WILLIAM H. MACY’s brand-new Porsche for a spin with a galpal — but Macy flatly refused, insisting his car is his baby and no one’s gonna drive it but him! “Fine!… I’ll buy my own sports car,” huffed Huffman. Suddenly not so desperate, Felicity’s whooping it up at the wheel of her very own, screamin’ yellow 2006 Corvette Z06 — the fastest ‘vette ever built. What’s more, she told hubby dearest, he won’t be piloting a Corvette anytime soon — unless he drops by a dealership for a test drive.