The predetermined condition is at least one of starting and stopping of {TAIL ~ the internal combustion engine} by the torque of {HEAD ~ the first motor generator} 
The predetermined condition is at least one of starting and stopping of { TAIL ~ the internal combustion engine } by the torque of { HEAD ~ the first motor generator }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD