We talk to Heather Shaivitz, who runs the travel blog myfriendscallmejulie.com about her recent family trip to San Francisco and Lake Tahoe. They flew into San Francisco, did 4 days there, rented a car, drove to Lake Tahoe, and spent a few days there as well. If you're thinking about a good city/outdoors combination trip, you may need to give this trip a hard look. Enjoy!