Wiktionary
in the driver's seat
a. 1 (context idiomatic English) Having the most important role in a storyline or recognition. Of primary importance. 2 (context idiomatic English) In control of an entity or situation.
Wikipedia
In the Driver's Seat
In the Driver's Seat is the sixth studio album by Canadian country music artist Aaron Pritchett. It was released on November 9, 2010 by Decibel Records.