This is a very bad idea…

This is a very bad idea because it will cause bikers to have to bike among cars, which is way more disruptive to traffic than having a dedicated bike lane. It's also much more dangerous for the bikers, who should be allowed and even encouraged to use their bikes, as that cuts down on greenhouse gas emissions. Furthermore, removing bike lanes will just increase traffic as crews change the paint, and adding an extra lane on city streets just means people will try to park there. Plus, adding more car lanes doesn't actually reduce traffic because of induced demand.