[Mike Garber]

pawn Код:

if(IsPlayerInAnyVehicle(playerid))
{
    SetVehiclePos(vehicleid,Float:x,Float:y,Float:z);
}
else
{
    SetPlayerPos(playerid,Float:x,Float:y,Float:z);
}

You don't have to use PutPlayerInVehicle or anything, if you move the vehicle the player in it wont get out of it.