File a police report, then file a claim with your insurance company. Pony up the deductible, and buy yourself a new laptop and restore it from your time machine backup. Its likely not worth the trouble to pursue getting the stolen property back.

This of course assumes that you have decent home owner's or renter's insurance, which should cover theft ever from your car. If you don't, then you should...

If someone's already mentioned this, I apologize. I didn't read through all of the comments.