Planning our summer vacation with older teens. We did a SF trip last summer and loved it! Drove down to Monterrey, 17 mile drive and Carmel. Loved the drive, fabulous scentery and great hikes. We will do Yosemite another year, but wanted other trip ideas. Central Coast? Big Sur? San Diego - wasn't sure if this held enough appeal for active teens? Would prefer one or two locations from which to base day trips, etc for a week.