I posted that pick in my luggage thread a while back. It was one of the UK bike magazines (Fast Bikes?) attempting to set a new "towing" speed record on a bike ....... reached a speed somewhere in the 130's I believe
I managed 1700 kms over 5 days (an easy tour with friends) with the MV tailpack (tools and maintenance items) and a Kreiga 35l backpack (clothes, raingear). No problems at all. One can tour on anything!