(a) One of my suggestions was to petition "Harvard to add an off street bike path parallel to Shepard St to accommodate those cyclists" which wouldn't require city tax dollars.

(b) To be a little Socratic and re-frame your question back to you, (b.1) why should motor vehicles have so much road space? (b.2) And why should so much of that road space be designated for the storage of privately owned vehicles? I.e., why is parking needed there? Cambridge is a city with transit and all those houses on that street have driveways (aka off-street parking).

(c) Why are my city tax dollars going to subsidize motor vehicle users so they can drive around threatening the lives of pedestrians and cyclists and generally be entitled?