Liev Schreiber doesn’t need a car service to get to events. Spies saw the actor, who will star in the new Showtime drama “Ray Donovan,” wheel into the Tropfest New York film festival in Prospect Park in Brooklyn on Saturday on a Vespa, with his longtime love Naomi Watts riding behind him. The duo were spotted dropping off the scooter at Schreiber’s trailer by the stage before walking the black carpet to join festival judges Malcolm Gladwell, Fisher Stevens, Charles Randolph and Lake Bell.