Mumbai 's dabbawalas have been delivering lunches in the city for 100 years . Extensive network of delivery facilities and unique system for delivery . Supply chain studies say they have a 99.9 percent success rate . By finding a way through the network of unmapable Mumbai streets and latterly discovering ways in which to tap into new revenue streams the dabbawalas appear future-proof , their unique system more than capable standing up to and economic downturn or personal changes in taste . Despite little change in 100 years , dabbawalas now have web site and text messages .
Mumbai 's dabbawalas have been delivering lunches in the city for 100 years . Extensive network of delivery facilities and unique system for delivery . Supply chain studies say they have a 99.9 percent success rate . Despite little change in 100 years , dabbawalas now have web site and text messages .