Since the start of Sept he's been dropping DS to school in the mornings (unless he's working abroad) then leaves his car in the car park at the tram station and takes the tram to work. He did say at the start that one day he would probably forget about the car because he often takes a taxi home from work, and today he did forget because he was rushing home so he could take DD to football practise.
It's not a big deal really, it's just funny. He's taken DD in m car and when he gets back he'll walk down to the station (only about 12 mins) and pick up his car.