The taxation idea doesn't hold water when you look at it in detail. I can't remember the reference now, but the point was made that because most road building i

The taxation idea doesn't hold water when you look at it in detail. I can't remember the reference now, but the point was made that because most road building is funded by sources that have nothing to do with cars (local taxes, etc) non-drivers are actually subsidizing drivers. Cyclists, along with pedestrians, actually pay more than their fair share of the cost, given that they cause practically no road wear and a minimum of the construction costs.