College daughter doing last minute road trip with two friends to take car back to college. Two girls starting out in SF and driving to LA to pick up third girl and make way to St Louis where they all attend college. Plan is to do this over 7 - 10 days. Girls are leaving in three weeks, so any advice is appreciated.
San Fran to LA - US 101 or I-5, or CA1?
LA to St Louis - I-15 to I-70?
Girls are on a budget and will try to stay at lower priced hotels along the way (around $100/night). All three girls are busy with their summer jobs/research so I offered to help plan their road trip. I am feeling anxiety over this trip, as I am a planner by nature. Daughter feels no such anxiety and is excited about this "adventure". Does anyone have any comments or other suggested routes and must see stops along the way?