#define RECORDING "busnpc" 
#define RECORDING_TYPE 1 //1 for in vehicle and 2 for on foot.

#include <a_npc>
main(){}
public OnRecordingPlaybackEnd() StartRecordingPlayback(RECORDING_TYPE, RECORDING);

#if RECORDING_TYPE == 1
    public OnNPCEnterVehicle(vehicleid, seatid) StartRecordingPlayback(RECORDING_TYPE, RECORDING);
    public OnNPCExitVehicle() StopRecordingPlayback();
#else
    public OnNPCSpawn() StartRecordingPlayback(RECORDING_TYPE, RECORDING);
#endif

Ontop
new busNPC;

OnplayerSpawn
public OnPlayerSpawn(playerid)
{
    if(IsPlayerNPC(playerid)) //Checks if the player that just spawned is an NPC.
    {
        new npcname[MAX_PLAYER_NAME];
        GetPlayerName(playerid, npcname, sizeof(npcname)); //Getting the NPC's name.
        if(!strcmp(npcname, "Bus_Npc", true)) //Checking if the NPC's name is MyFirstNPC
        {
            PutPlayerInVehicle(playerid, busNPC, 0); //Putting the NPC into the vehicle we created for it.
        }
        return 1;
    }


OnGameModeInit

print("my gamemode");
    ConnectNPC("Bus_Npc","busnpc");

busNPC = CreateVehicle(431, 0.0, 0.0, 5.0, 0.0, 3, 3, 5000);