New Zealand racing car driver Liam Lawson's being promised a fulltime role driving for Red Bull's junior formula one team, RB. That's according to Helmut Marko - the racing team's director, and the head of Red Bull's driver development programme. But - there could be a pothole or two ahead... the team's boss Christian Horner wants to keep Australian Daniel Ricciardo behind the wheel. Motorsport analyst Bob McMurray spoke to Corin Dann.