Photo/IllutrationAn artist’s rendition of e-Palette Concept, a prototype of a self-driving electric vehicle developed by Toyota Motor Corp. (Provided by Toyota Motors Corp.)

Toyota Motor Corp. will invest $1 billion (110 billion yen) in Singapore-based Grab Holdings Inc., the biggest ride-hailing provider in Southeast Asia that took over Uber Technologies Inc.’s regional business in March.

The investment, announced June 13, is the largest for an automaker in a ride-hailing business, according to Grab.

Grab operates in eight Southeast Asian nations, and its app has more than 100 million users. It also provides platforms for ride-sharing by private drivers, as well as car rental services.

Toyota announced in August 2017 that it would collaborate with Grab, and installed data-transmission driving recorders on 100 of its rental cars to collect driving data with the aim of achieving a more efficient ride-hailing service.

Now, the companies will expand the collaboration, and a recorder will be mounted on rental cars in all areas where Grab operates in Southeast Asia. The number of vehicles involved is expected to be in the tens of thousands.

Toyota will use the data to help expand insurance and maintenance services to Grab users.

Under the deal, the companies will also explore the prospect of introducing e-Palette, a self-driving electric vehicle developed by Toyota, for taxi services.

As a part of the investment agreement, Grab will install two Toyota personnel in senior positions, one as a member of its board of directors, and one as an executive officer.