A new all-indoor parking area opened near the OAK airport. First day is free and each subsequent day is $6.50. They have airport shuttle and will do things like change your oil and wash and detail your car while you're away - for extra fees of course. It's Ampco Express and it's at 880 Doolittle right by the airport. 800-820-8626 or www.ampcoexpress.com

Disclaimer: I haven't tried it yet (will do so later in the week) so can't vouch for service and security.