More and more Tokyo residents are switching from tea to coffee. And in some cases, it's thanks to Motoko Ito who runs a small fleet of yellow vans which sell lovingly brewed lattes (he roasts the beans himself) at key points around the city. The little company offers not just coffee but a moment of human contact amid the hurly burly of the city. It's staff know their customers on first name basis. That's the secret, he says, of his success.