This Former Amazon Employee Makes $1,000 a Month on His Parking Spot Side Hustle, and It Takes Him 15 Minutes Justin Cambra has figured out a painless way to make passive income.

Since Justin Cambra quit his job in the real estate department at Amazon a little over a year ago, he's been a man of many pursuits. The way he sees it, "In today's world, stability is from multiple sources of income. I'm trying to generate as many revenue streams as possible."

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That's why, when he was at a conference in Detroit this past January and a friend told him about his latest side hustle, Cambra said, "Oh my God, this is a no-brainer. I'm doing this ASAP. I downloaded the app on my way to the airport, and two weeks later, I got my first booking."