Scooters parking legally - see if you can spot the problem in this photo, taken at this morning's Boston Common Scoot-in by organizer Jeff Cutler.

Associated Press reports the Registry has modified its new big-scooter registration policies.

They'll all be occupied by scooters whose drivers are part of a "scoot-up" to protest the change in their RMV status - which could lead to them being fined if they park on sidewalks.

Scooters are cute and functional.

These little vehicles can transport people and belongings - albeit not many - great distances on very little fuel. They can navigate small areas and can be stored in a fraction of the space of a traditional car.

Best of all, they can be parked nearly anywhere so they have a positive impact on the municipal parking challenges most big cities face.

Jeff Cutler is riding part of today's scooter rally, which starts at the Fenway HoJos, roars into Larz Anderson Park and then takes off for Castle Island. Here he photographs a scooter with a sidecar (and here he photographs a scooter made of wood).