It would be difficult for some people to let a stranger drive off with one of their most valuable possessions. But not for Stanford graduate student Katie Hagey.
Hagey is one of a growing number of individual car owners who have started renting their wheels to people they don't know through car-sharing startup companies resembling the better-known Zipcar.
Hagey makes an extra $150 a month by renting out her car via Wheelz, a Silicon Valley car-sharing startup. Wheelz allows Hagey to name a price for others to "borrow" her silver BMW when it would otherwise be sitting unused in a campus parking lot.