[Abagail]

They won't technically, but they'll be invisible as the vehicle is.

Quick example.

pawn Код:

CMD:v(playerid, params[])
{
     // make sure you turn off their name tag.
     VanishVehicle[playerid] = CreateVehicle(596, pos[0], pos[1], pos[2], 0.0, 0, 0, -1);
     LinkVehicleToVirtualWorld(VanishVehicle[playerid], 250);
     PutPlayerInVehicle(playerid, VanishVehicle[playerid], 0);
     Invisible[playerid] = true;
     return 1;
}

Note that the vehicle can still be collided with by players within the normal virtual world.