In case you haven't heard of Lyft, they are a ride-share (similar to cab company) that just expanded to LA. I've used them in SF and have had good experiences.
Seems like they are emailing out the same code: GLTLFT4336
You have to download the android or iphone app to use this service.
Enter the code in the settings/lyft credits section of the app to get your $25 credit.