A review found all the options for the Coldhams Lane junction would take the project significantly over budget.
The Combined Authority is working with operator Voi on the scheme.
The £2bn project needs proper scrutiny, councillors have warned.
The renowned Cambridge-born civil engineer has been involved in London’s Jubilee Line Extension, HS1 and Crossrail, plus international metro projects.
Ministers have called for the two bodies to collaborate over transport plans.
They will serve sites including Addenbrooke’s and Cambridge Biomedical Campus, the Science Park and Cambridge Regional College.
He also worked on the Olympic Park, Euston Station redevelopment and is advising on the House of Parliament revamp.
Cllr Lewis Herbert warned the city needs a major uplift in public transport in the 2020s not in the 2030s .
It follows an intervention by the UK Trading Standards Authority.
They give off no emissions, but how environmentally-friendly are electric scooters across their full life cycle?
The Combined Authority votes to create a 'special purpose vehicle' company for the metro project.
An opinion piece by the mayor of the Combined Authority of Cambridgeshire and Peterborough
Voi has been appointed to run the 12-month pilot by the Cambridgeshire and Peterborough Combined Authority.
He outlines his ‘One CAM’ vision.
