My wife and I recently did a week-and-a-half coastal road trip along the California coast from the Santa Barbara area up through SLO & Morro Bay, Big Sur and up to Santa Cruz on Highway 1 (in an ICE car). It seems most of the initial Supercharger locations are along more heavily-traveled routes. Have any of you done this trip in a Model S, and how challenging was it to charge up along the way? Just curious. Thanks in advance for your replies.