Same. Self-driving cars/vans would be brilliant for trailhead use. In 2016, hiking Trans Zion, we paid US$120+tip to get two of us from our car to a starting point about 60-90 minutes away. Earlier this year, my brother and I hitched three separate times to save 10 hours of road walking in a storm to get back to our car after Buckskin Gulch. We were lucky with the timing of each ride.

I've been deterred from hiking the Grand Canyon rim to rim by needing to either hike all the way back, or have two cars and add a 5-hour drive. Salt Creek in Canyonlands is another where a shuttle is a help, or crossing from The Maze over the river to The Needles (avoiding many hours of driving back).

Being able to call a self-driving car to affordably make these trips would be great.