A Union Pacific Sales And Marketing Special crosses the Gaviota Trestle heading for a overnight stop in San Luis Obispo. The next day it goes north to San Jose and Oakland. Then up the Martinez sub to Elvas and down the Fresno sub to Lathrop. Over Altamont Pa.ss to the Coast Sub and back to San Luis Obispo thus making a 380 degree turn. Thursday it returns to Los Angeles.