JAKARTA/MOUNTAIN VIEW, U.S. -- Grab, Southeast Asia's leading ride-hailing app, is well known for the vast amounts of money it has received from investors: about $14 billion and counting. Soon, Grab may also be known for the investments it makes. In 2017, Grab joined a funding round that invested $15 million in drive.ai, a driverless-car startup developed by researchers from Stanford University. A year earlier it formed a partnership with nuTonomy, another autonomous-vehicle company, spun off from the Massachusetts Institute of Technology.