General Motors Co.'s (GM) Maven car sharing and rental unit could present of conflict of interest with two of its largest clients, Uber Technologies and Lyft Inc., Reuters reported Wednesday. 

GM holds a 9% stake in Lyft.

Maven was originally focused on car sharing when it was launched in 2016, but it has expanded its focus since then to include third-party leasing services through Uber and Lyft. The program has also partnered with food delivery services GrubHub (GRUB) and Instacart.

In a statement to TheStreet a GM spokesperson said, "Maven is not a ride-sharing company. Through Maven Gig we provide vehicles to drivers that can be used for ride-sharing or delivery services."

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