A $1 billion investment by Toyota into ride-hailing service Grab is being touted as the largest ever by a car manufacturer.
The Japanese automotive giant has helped push the South East Asia-focused mobile app to a total funding level of over $5 billion since its creation in 2012.
Hyundai was an previous backer of the company in an unspecified part of a Series G round earlier this year.
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The same round began in late-2017 and included a $2 billion investment from Chinese mobile app service Didi, as well as long-term supporter SoftBank.
The new investment will be used in part to fund its ongoing expansion as well as side-brands such as GrabFood and GrabPay.
The deal includes the development of connected cars and collaboration on technology.
Last week, fellow taxi-hail service Gett landed an $80 million round from Volkswagen, among others.
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Grab claims to have achieved "run rate revenues" of over $1 billion through its network of over 100 million users in 2017 cities in eight countries in the region.
President Ming Maa says: "Our rapid user and revenue growth is a testament to our ability to hyper-localise, efficiently execute and provide the highest efficiency platform in a region as diverse as Southeast Asia."
The company has recently managed to reduce its direct competition in many of its key markets.
It "merged" with Uber's South East Asian interests in March this year - a deal that saw Uber take a 27.5% stake in the combined entity and its CEO Dara Khosrowshahi take a seat on its board of directors.
In a single move, Uber's interests in Cambodia, Indonesia, Malaysia, Myanmar, Singapore, Thailand, Vietnam and the Philippines are effectively run by its previous closest competitor.
Toyota says the new agreement give it the opportunity to work with Grab on initiatives such as its Mobile Service Platform, including user-based insurance tools, financing programs and predictive maintenance for vehicles.