Transmission will not engage intermittently. Issue temporarily resolved while driving by placing transmission in neutral, turning key off, then restarting engine.
Appears to be a loose ground or a failing ignition switch/rod. Guessing there's an interlock associated with the key device. The recall for the car has already been done, yet continuous ignition problems that gremlinize various associated vehicle components. Associated symptoms are complete power loss and transmission slipping in all gears.