https://www.reuters.com/article/us-alphabet-uber-ruling/uber-lawyer-says-ex-ceo-board-members-told-of-letter-kept-from-waymo-lawsuit-idUSKBN1DT2XT >Uber Technologies Inc's former chief executive and some board members knew of a letter a U.S. judge has said was withheld from a high-stakes lawsuit, an attorney for the company testified on Wednesday.