alt Hacker Newsbut you're assuming that work provides parking. Its not a given, plus whats in it for the drivers?
plug my car in, it might be full, it might be empty, either way its racking up the charge cycles for no direct benefit for me.
Batteries on a house makes a better sell for customers, and also targets the problem of both over supply and over consumption at source.
Workplaces (and other locations) could offer free/reduced-cost charging, with the caveat that V2L is required. They could guarantee that the vehicle will be at a certain charge level at a designated time, and that the vehicle will never go below a threshold (in case an unanticipated trip is required).