Also, if they were riding by possibly they are local to the area. Might be worth it to drive around the area at different times of the day to see if you can spot your bike. If you see it then video/photo it and call the cops, if you're in an area where the cops will repond to stuff like this. Not worth dieing over though.

edit: based on your previous posts it looks like you might be in the Los Angeles region where two miles can seem like a different country. With that in mind, cut your losses, check your homeowner's or renter's insurance if you have that to see if there is any coverage and find a new bike. And as noted above, get a better lock and learn the procedures to secure a bike. No bike can be made theft proof, but you can sure slow them down a bit or cause them to find easier targets.

Sorry for your loss.