I know there are open-cast mines that already use remotely controlled/monitored and self-driving trucks. I think using it in an environment that they're used to

I know there are open-cast mines that already use remotely controlled/monitored and self-driving trucks. I think using it in an environment that they're used to, and which I presume would be most practical, makes sense. It is more helpful for them to research and build their technology where it will mostly be used, on the streets. There is more volume of traffic, which makes it possible to deploy 100 small cars cost-wise, and could lead to 'quicker' development as they won't always be slowed down by legal and other negotiations with airport companies and the like. Just my thoughts anyways :)