@mtbarra @mtbarra @mtbarra Mary Barra/Twitter appears to be on Twitter @mtbarra @mtbarra @mtbarra @mtbarra Yes @mtbarra Yes @mtbarra @mtbarra Yes Yes @mtbarra @mtbarra @mtbarra @mtbarra via her Twitter page. @mtbarra Twitter Yes Twitter @mtbarra @mtbarra @mtbarra Yes @mtbarra @mtbarra she said @mtbarra @mtbarra Yes @mtbarra Yes appears to be on Twitter @mtbarra @mtbarra Yes Yes @mtbarra @mtbarra @mtbarra @mtbarra @mtbarra @mtbarra @mtbarra Mary Barra/Twitter @mtbarra Yes @mtbarra Yes @mtbarra @mtbarra Yes @mtbarra @mtbarra @mtbarra @mtbarra