Ellen James-Penney preferred to park her silver-gray Volvo station wagon on deck two of the parking garage.

Maybe it was all imagination, says the woman, but up there she felt less watched than on the ground floor and found her sleep better at night.

James-Penney, a tough American in her late 50s, taught English at the University of San José, California.

She made $ 2,500 a month - and was homeless.

Silicon Valley, the famous tech hub between San José and San Francisco, is home to countless companies, including Google and Amazon. Nowhere in America are rents as high as here. And that is exactly what is increasingly becoming a problem. In the city where dreams should come true, university professors live in the trunk of their cars - and employees of technology companies in delivery vans. A visit to a dying technology metropolis.