I think having a look at European cities that have implemented this would be very interesting...The voters know that all the powers of evil are marshalled against him, so as long as he's legitimately working to fulfill his promises he'll be just fine.
I would say that the whole idea is about getting people to use buses and freeing the roads of private cars more... For this to happen frequency and punctuality need to be key. This would have more bus lanes for public vehicles (includes Taxis)..
Manhattan has 36% of it's Island cover in Roads... The quality of life for its inhabitants would increase substantially if there was less cars and thus less roads... Think of using more E-bikes and walking... Countries in Europe are doing this and reaping rewards...

