Capital Letter: NZ Herald's Georgina Campbell on potential 120km/h speed limits

The government asked for advice on potentially introducing 120km/h speed limits - so what does NZTA make of the idea?  And what did we learn during the sentencing hearing for Kiwirail over the Kaitaki losing power and issuing a mayday call?  NZ Herald Wellington issues reporter joined Nick Mills for the Capital Letter.  LISTEN ABOVESee omnystudio.com/listener for privacy information.