Not a new idea..calling for a cab.. but its the combination of a rickshaw and cell phone that's interesting

http://www.newstrackindia.com/newsdetails/7141

Here's a good idea to alleviate the New York (and any other big city) parking problem

Read this article. Neat huh! What's wrong with this?..at the moment I see nothing...but, of course, the expense of installing sensors in every parking place and of laying out street with designated parking places...neither of which New York does. But if you've ever driven around a 2 blocks on the side square looking for a parking place, you can at least imagine what it would be like to look at your smartphone displaying a map of your neighborhood with blinking lights showing available parking places. But if such a service had existed in the 90s then we never would have had Seinfeld since many episodes were based on New York parking stories.

Extending cell phone usage to very low income populations

In the late 1990s, the conventional wisdom among industry analysts was that mobile phone penetration in the Philippines could not exceed 20 percent to 25 percent on account of the country's relatively low per capita incomes. By end-2007, however, over 60 percent of Filipinos had become mobile phone users. Nazareno attributed the Philippines' success in promoting the usage of mobile phones to the introduction of various innovations in cellular technologies and business models. He cited the introduction of prepaid services in the 1990s which Smart has aggressively promoted. "This innovation opened the door to just everyone -- students, housewives, employees, blue collar workers, farmers, fishermen and families of overseas worker," he said. More