Occasionally I frequent a location to attend some CPE classes. This location has 4-30A public chargers that are free, paid for by the property manager. I sometimes avail myself of 4 hours of electricity as I am out-of-town and the nearest SC is 25 miles away.
I have walked past this particular EVSE area about 8 times in the past three years. Every time there is a Chevy Volt parked there for the entire day. Clearly this driver is employed at one of the stores in this shopping area, and uses the location to charge and park the entire day.
I think this might be a situation that some of us anticipate could materialize with the Model 3. People who work proximate to the SC will grab a charge and use the space as a parking spot until they feel like returning to their car on break or worse, at the end of their shift.
And I do not know the solution to this dilemma. Whether pay-per-use, or one-time up front fee, parking at SC will make matters worse.