John Tapp September 18, 2018 Harness Racing, John Tapp Racing, Trots MACCA'S ALWAYS THERE TO LEND A HAND - The Glenn McElhinney Story John Tapp September 18, 2018 Harness Racing, John Tapp Racing, Trots There’s nothing Glenn McElhinney enjoys more than driving a winner for one of the smaller stables. The veteran freelancer, always identifiable with his bright yellow helmet, has been a familiar face on Sydney tracks for more than four decades.