On the one hand, this is a really neat hack. On the other hand, given the current situation with cars, pollution in cities (air quality, noise-level etc), global warming, I would personally think twice before doing something that would make car driving easier and more pleasant, as that simply incentivizes more driving. (getting a ticket might be a small inconvenience, but it does contribute to creating a slight aversion to driving).

Sure, this may seem a bit "evil", and the better solution is reducing negative externalities through taxing, which is a more transparent and ethical solution, but most of us don't have that level of power and influence within local councils and governments.