The holidays are almost here. For many Bay Area families, that means loading up the car and driving to see loved ones, whether it's a trip down I-5 to Southern California, over the Sierra to Tahoe, or up the coast to Oregon. Holiday road trips make great memories, but the last thing anyone wants is a breakdown on a crowded highway, miles from home, with a car full of kids and presents. The good news is that most roadside trouble can be prevented. A quick pre-trip inspection i