Of course the roads would still be there but everyone driving on it would be a worker of some kind (trucks, usps, ups, ambulance, busses etc).
In that case, having a bike lane on the road is fine. They already did it with busses. Entire lanes here are painted red with bus only on them. They'll just do the same for bikes. One green lane for bikes, 1 red lane for city vehicles (busses, cops, ambulances), 1 normal lane for annointed drivers (delivery trucks etc).
> conspiracy theory
It's already happening. Manhattan just added a $15 dollar toll , entire lanes are being devoted to busses, neighborhood streets are being closed to through traffic. Give it 997 more cuts to get to what i'm talking about.