[[MG]Dimi]

Something like this.

pawn Код:

public OnPlayerEnterVehicle(playerid,vehicleid,ispassenger)
{
    if(LastCar[playerid] != vehicleid)
    {
        for(new i=0;i<MAX_PLAYERS;i++)
        {
            if(IsPlayerConnected(i) && LastCar[i] == vehicleid)
            {
                new msg[128],name[24];
                GetPlayerName(i,name,24);
                format(msg,128,"This vehicle is locked by %s!",name);
                SendClientMessage(playerid,-1,msg);
                ClerAnimations(playerid);
                break;
            }
        }
    }
    return 1;
}

Scroll through all player's last car or whatever vriable you use. Also add is car locked etc.