Mary BarraâVerified account @mtbarra Mar 29. I was energized by SYNAPSE, @GM's 2-month innovation program. Meeting some of the enthusiastic teams was a highlight last week!pic.twitter.com/CQFC5mpuCg. 6 replies 10 retweets 45 likes. Mary BarraâVerified account @mtbarra Mar 27. A @GM engineer shares a post on building our bench-strength of female leaders.