Reuters: DOJ investigates Uber 'greyballing' scheme
The ride-hailing firm has received a subpoena from a California grand jury.
Uber promises it won't 'Greyball' law enforcement anymore
The tool identified accounts of local regulators and sent them nonexistent cars
A newsletter a day keeps the FOMO at bay.
Uber used 'Greyball' tool to evade authorities around the world
The app targeted and misled enforcement officers trying to shut it down.