самостийно(chiefly British: through one's own efforts. MWCD. At one's own instigation. My boss didn't tell me to reorganize the filing system, I did it off my own bat. WT Alexander Demidov)
рвануть с места(The car pulled away from the curb like a bat out of hell. // I started the car and peeled out of there like a bat outta hell and drove straight to the hospital. 4uzhoj)