What is the easiest way to exchange cars between characters in GTA V?

I'm wondering what is the easiest way to give a car from one character to another (perhaps on the opposite side of the map). The garages can only be accessed from the owner and cars left without a character nearby may disappear. I remember reading something related to parking lots and car storage but can't recall the details.

Solution 1:

If you set a waypoint for a character, then switch characters, the other character will generally head towards the waypoint. You can continue to check their progress by swapping between the two until they both arrive at the destination.

Solution 2:

When you switch from a character he will generally stay where you left him for a little while. When you switch to a character he will spawn pretty close to his safe house. For Micheal that's usually in Vinewwood, Trevor is Sandy Shores, and Franklin is either Strawberry or Vinewood Hills.

You can use this to your advantage and drive to near the spawn location of the character you want to give the car to, and then switch to the recipient. He can then meet up where you left the previous character and take his car.

Caught on to this trick when I accidentally ran Franklin over with Micheal after leaving the latter standing in the middle of a street.

Edited to add:

Make sure the character you are taking the car from is standing a little ways away. I tried borrowing the Trevor Phillips Industries helicopter, and Trevor didn't like that one bit, pulling Franklin right out of the cockpit.

Solution 3:

There is a pair of garages next to the Impound Lot (green lights). These garages open for every character and keep the car accessible. I was able to exchange a car between Franklin and Michael.

Solution 4:

Theres an easier way, only one condition: -you must at least be to the part in the story where trevor takes over the strip club.

That being said, behind the strip club, kind of by where trevors truck is usally parked there are four or five parking spaces. Namely, two with yellow parking stops. Those are his garage spots, and the fact they are not enclosed lets any character can walk up and take as they please. The car will save there, promise. i put my z type there all the time and dont think twice.

Solution 5:

I swapped cars between characters by calling them for an activity and got in the car after the activity.

In this case I played with Franklin and called Michael. I took Michael's car and after the activity I still had Michael's car and Michael walked away .