A plea to reduce the bail for the driver involved in a fatal car crash in Marshall in January was denied on Tuesday by a Marin County Superior Court judge. Lucas McFadden, 23, will remain in custody with a $500,000 bail until his preliminary hearing on June 4. The Petaluma resident was charged with gross vehicular manslaughter while intoxicated after his Honda drifted into incoming traffic on Highway 1 and crashed into a truck, killing…