There was an idea mentioned some time ago regarding a Medivac system. Since I now have added a field radio, maybe it's time to implement it. I'm thinking of having something like Skyrider added, who you can call on the radio when a quick evac is needed.
This is how I would implement it:
Once the player has the radio, he'll get a call on it asking for help. A sector is shown on the global map and when the player gets there and rescues Skyrider there's a constant Skyrider dialog option when using the radio.
There are two ways to set up the Medivac system, either by having "favors" from Skyrider or a simple "pay-for-service" system. The Favors system would be like doing tasks for Skyrider and you gain favors. It would put a limit on how often you can use him and couldn't be exploited too much. The only issue here is the player car, will it be left behind or should it be available at the Valet. This system is only one-way and the player gets dropped off at the base.
The Pay-for-service would be simple for the player, but more difficult for me, my math skills aren't that good
I think it's possible to calculate the price depending on distance traveled, but it would tricky, coding wise. You could only travel to known sectors, even hostile ones. The player would have to leave his car at the base before this service is used, so trunk space would be out of the question. The player can travel with Skyrider from anywhere to a sector of their choosing.