The deal would value the self-driving business at $5 billion to $10 billion, the people said.
Uber, a global logistics and transportation company most recently valued at $US76 billion ($108 billion) in the private market, is seeking a valuation as high as $US120 billion, although some analysts have pegged its value closer to $US100 billion based on selected financial figures it has disclosed.
But Uber is under scrutiny for its losses - its net loss was $842 million in the fourth quarter - and self-driving technologies are expensive. The late-stage discussions were reported earlier on Wednesday by the Wall Street Journal. A $1 billion infusion could ease worries about how costly it is to develop autonomous cars. The company lost $911 million.
In 2018, Uber stopped testing its self-driving cars for nine months after one of its vehicles killed a pedestrian in Arizona.A Business Insider investigation found that the pressure to catch up with competitors led to Uber's self-driving group to make several questionable decisions before the fatal crash.
Uber receives $100 million in funding for its driverless cars unit. As part of an agreement with employees, the company rewarded them with equity in Uber Freight as a stand-alone business late a year ago.More news: No Man's Sky Beyond Adds Sprawling Online Multiplayer Component, Coming This Summer
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If all goes to plan, commuters could ride an e-scooter to a transit station, take a train, then grab an e-bike, share a ride or take an e-scooter at the arriving station to complete a journey - all using an Uber app on a smartphone.
Uber, which a year ago lost about $3.3 billion, is wagering on a progress to self-driving vehicles to dispose of the need to pay drivers. In June, the Japanese technology conglomerate agreed to invest billions in another self-driving business, General Motor Co's Cruise.
The news also comes at the heels of SoftBank's aggressive strategy of heavily investing in AV programs across the industry.