Infrastructure in Holland is pretty well adapted to cyclists; there is always room for improvement though. I thought we had a great improvement recently with the green lights for cyclists when it rains (see here) but this one is surely a winner:
Towns in the Netherlands are considering a proposal to heat cycle lanes to encourage greater use of bicycles in winter. In the near future a trial will start in the city Zutphen and the province Utrecht.
The scheme will use geo-thermal energy to prevent ice forming. This means the asphalt will be cool in the summer and warm in the winter.
The prognosis is that these bike paths will hardly cost more than normal bike paths and very little energy is needed to keep the paths warm in the winter. The reduction in crashes due to iced over roads will most likely outweigh the additional costs of creating the paths.
I guess this is why you can be car-free in Holland without getting stares.
And for those of you who want an English source: