‘Motel 22’ is an unusual shelter for California’s homeless people. The state is one of the wealthiest in America yet it has the largest population of homeless people – more than 151,000 - in the US. In the Silicon Valley the bus route 22 runs an endless loop from Palo Alto to the Valley’s biggest city, San Jose. Along the way it passes some of the world’s biggest tech giants: Google, Apple, Hewlett-Packard and Facebook. It is the Valley’s only all night bus and many of its night-time passengers ride to keep warm and sleep. For Assignment, Sarah Svoboda takes a ride on the bus, known to many as ‘Motel 22’, to hear the stories of its travellers.(Image: Homeless people riding bus route 22. Credit: Sarah Svoboda/BBC)