Uber Technologies Inc. is planning to invest in the Hong Kong listings of Pony AI Inc. and WeRide Inc., according to people familiar with the matter, deepening the ride-hailing giant’s ties with the Chinese robotaxi firms. Uber may invest about $100 million in Pony AI’s share sale, the people said, asking not to be identified because the information is private. Pony AI, which went public in the US last year, is looking to raise as much as $972 million in its Hong Kong listing, before an option to increase the size of the deal. San Francisco-based Uber is also interested…