[Dark_Kostas]

pawn Код:

new Pseconds[MAX_PLAYERS];

public OnGameModeInit()
{
  SetTimer("PsecondsUpdate", 1000, true);
  return 1;
}

public OnPlayerConnect(playerid)
{
  Pseconds[playerid] = 0;
  return 1;
}
forward PsecondsUpdate();
public PsecondsUpdate()
{
  for(new i=0;i<MAX_PLAYERS();i++)
  {
    if(GetPlayerSpeed(i) < 30)
    {
      Pseconds[i] = 0;
    }
    if(GetPlayerSpeed(i) > 29)
    {
      Pseconds[i] ++;
    }
    if(Pseconds[i] == 60)
    {
      GivePlayerMoney(i, 1);
      Pseconds[i] = 0;
    }
  }
  return 1;
}

Added this

pawn Код:

if(GetPlayerSpeed(i) < 30)
{
    Pseconds[i] = 0;
}

So if you are under 30 you will lose the bonus.