I have worries about any government having ideas on what we should do. That is not for them but for us as individuals.
I don't have worries about government helping us to stop doing things we don't want to do or can't stop ourselves. In this case the elephant in the room is car travel. It is reaching unsubstainable levels and its cons have moved well ahead of its pros. It benefits all if traffic levels can be lowered - especially for drivers themselves. If we can siphon off a proportion of car journeys to other modes it would be great. It is of secondary, nay tertiary importance whether this be train, bus, bikes or shank's pony.
That's what the parliamentary inquiry should be about. But this and AFAIR previous governments have funked targets for reducing car travel.