Guests at Ristorante Buona Sera (546 Gramatan Ave, Mount Vernon 914-665-9800; ristorantebuonasera.com) can have an extra glass (or two or three) of Chianti with their dinner by taking advantage of the restaurant’s courtesy car program. Call at least a day in advance to make a dinner reservation on a Thursday, Friday, or Saturday, and the restaurant’s Lincoln Town Car limo will ferry you and your guests (up to six) to the restaurant and back.The limo service is limited to one pickup and one drop-off location and is available to residents of Mount Vernon, Bronxville, Pelham, Tuckahoe, Yonkers (east of the Saw Mill River Parkway), Scarsdale, and the Wykagyl section of New Rochelle. And, remember to tip your driver!