Donate Your Car Sacramento

Hi I’m trying to get from Brentwood CA, 94513 to Sacramento State or Cal Expo to see my girlfriend by only using a bus.
I do not have a car that will get me back and forth..
I know you can take a train and everything..But I’m looking for a way around that. If train is my only option does anyone know the estimate price for a ticket? I can’t seem to find any prices…