I spent the weekend with community of homeless mechanics in New York to see what it's like to live on the streets

Homelessness is on the rise in the city, up 39% from last year. And even more are opting to live in the city's streets, parks, and alleys than shelters - nearly 4,000 as of July, the most since 2005.

There's a vast diversity to the people living without secure housing, and the various situations they find themselves in.

In central Brooklyn, a flashpoint of gentrification in the city, we met Moustafa, a 48-year-old mechanic who lost his shop and his home three years ago.

Moustafa now lives nearby in a community of about a dozen homeless mechanics who live out of their vehicles and try to get work when they can. He invited us to spend the day and night with him to get a glimpse into what it's really like to be homeless in New York.

Here's what we saw: