But there is cross-party opposition to the idea.
They have laid down a challenge to the Independent Commission on Climate, set up by Combined Authority mayor James Palmer,
The Combined Authority and Voi Technology have also revealed details of how many have used their e-scooter scheme.
The GCP is planning to carry out an audit into the ‘assumptions and constraints' that led to the elimination of other routes.
They will be paid £40,000 a year for a minimum of 15 days work.
The GCP’s Aidan Van de Weyer claims James Palmer ‘bungled’ the proposals.
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.