✔ 最佳答案
You need to get realistic.
1. In theory, it takes about 19 hours to drive through San Francisco, Los Angeles, and Las Vegas. But in fact, it takes about 2.5 days to do so based on the way of travel.
Also - it may take longer if you are not a seasoned driver.
2. A lot of "road-trip" drivers like to stop here and there to enjoy, which will significantly delay time.
3. Your "transportation' cost is about the same if you fly instead.
4. For Los Angeles only, if you don't intend to skip any theme parks (Disneyland, Universal Studio), the city will use at least half of your time.
So here is my suggestion:
a. Fly as you can - It is okay to drive between Los Angeles and Las Vegas. But between San Francisco and Los Angeles/Las Vegas, flying is still the best option if you have only 2 people;
b. Reduce a city from your plan;
c. Increase your allotted time.
Otherwise, you will be too tired to enjoy the trip.