Mr. Singhal's dismissal is another example of both the talent pipeline and the competition between Google and Uber. Last week, Waymo, the self-driving car company spun off from Google, filed a lawsuit against Uber accusing it of colluding with Mr. Levandowski, a former Google employee, to steal its autonomous vehicle technology. Uber called the suit "baseless." Uber, now privately valued at nearly $70 billion, has raised a dizzying amount of money from venture capitalists around Silicon Valley. One of its early investors was GV, the venture capital arm of Google's parent company, Alphabet. In August, David Drummond, a longtime Alphabet executive who was instrumental in GV's $250 million investment in Uber in 2013, stepped down from Uber's board of directors as it became increasingly clear the two companies were on a collision course. Mr.