The best way to get people to use public transport, is to improve public transport - cleaning it up, getting rid of the stabbings, assaults, murders, homeless people sleeping in the subway would be a good start, not to mention the stink of urine everyplace you go.

This plan just forces the people to whom $15/day is a burden to use the available crappy public transport options and allowing the wealthy to continue to do what they have always done, unaffected by the little people - as usual.

The same thinking that is used to propose that we should ban gas stoves, but not private jets or 500' yachts.