Maybe you want to pick another end location.
It is only a five hour ride with but two real stops Baker and Barstow.
There’s meth labs in Barstow, not ghost towns on this trip.
As I suggest pick another end location.

Honestly, there is not much to do and see between LA and Vegas. However here are the few places worth stopping. Barstow to gas up, Baker home of the worlds largest thermometer and Primm on the stateline to gamble and shop at the outlet centers.

However when you get to Vegas, plan a day trip Red Rock Canyon for hiking, Bonnie Springs Ranch, Hoover Dam and Lake Mead
http://www.lasvegas-how-to.com.....-trips.php

Wow there is so much to see on the way to Vegas, it will boggle your mind. Vegas is surrounded by more national parks than almost anywhere. To find them go to VegasNature.com. They have videos and map you can decide what you will want to see.

Baker, CA. Largest Thermostat around! More digital now. Due to mercury being toxic. Lucky Chevron Gas lotto pit! A UFO selling beef jerky place. A greek cafe. Basically it was a stop put in before rolling on to Death Valley.

Oh, forgot to mention 1 Starbucks was their, last time I visited the alien jerky store.

Mohave Desert, Barstow shops, and the casinos on the Cali/Nevada border. You won’t need 3 days though trust me. One long day is all you’ll need.