Let's say, how many?

I have five.

Kent Liu owns 11 vehicles, from Porsches to Jaguars and Alfa Romeo.

He rents out his fleet on a car-sharing app Turo,

frequently referred to as the "Airbnb for cars".

I started in 2013. I started with the Honda Accord and I purchased that car specifically to rent out,

to test out the peer-to-peer car-sharing model.

You know, it was really successful so I figured, why not scale it?

I've been adding cars to my fleet ever since.

According to Turo, the average monthly earnings for owners on the platform is $720.

And if they have more than three cars, they can make over $3,000 per month.

The vehicles don't have to be high-end sports cars.

Demand just really went off the charts. The 50 Euro Honda was being rented all the time. People loved it.

Ann Connolly joined 4 years ago with her 2002 Honda CRV,

and has since purchased two additional vehicles to rent out.

It wasn't really ever a full-on intention to run the business, the car-rental business, but it just sort of, happened.

Since Turo is a peer-to-peer service, they act as the middle man,

so they don't own the cars, pay for parking, or servicing.

They take care of all the marketing, the back-end support. Insurance is also the key thing that they take care of.

Car-sharing will not be a true game changer according to the Boston Consulting Group.

Still, they project 35 million people worldwide will use the type of service by 2021.

Heads off from just 6 million users in 2015.

And it's become far more popular in Europe and Asia than in North America.

The way I see it is, if the car is rented out more than 50% of the month, then it's time to get another car.

It's all about meeting that demand for these high-end vehicles.

Definitely see why I want to try it out.