Here’s the announcement from Metro:

Zip Car, the Nation’s largest car sharing service, is now available at Los Angeles Union Station! There are currently 4 cars on site; 2 are located in Lot B at the front of the station and 2 are near the Mozaic Apartments. For a nominal fee, users have access to a vehicle, gas, insurance and up to 180 miles per day. Zip Car is available for rent by the hour or on a daily basis if needed. The recent merger of Zip Car with Avis Rental Cars ensures that supply will be able to meet the growing demand for this flexible transportation service that can support your transit commute. To register or to learn more about Zip Car, please visit zipcar.com.