Good points there Siobhan. This was just a random idea I had and wanted others views.
I don't think there way to avoid the pay someone else to pay issue.
In terms of what happens if the taxi is destroyed, I would initially suggest you would go back to when you were last in your ship docked at the station you left it.
The idea came from maybe a cheaper but more risky way of getting round the systems if you wanted to move ships around.
People could also do tours of permit locked areas, such as a Sol Tour.
If they got it to work, could then work towards having proper crews rather than holograms, who could then participate fully in missions and trade. but I am aware this is currently causing problems at the moment.