*2.1. Case Area*

The data collected were from inhabitants of HMA in Southern Finland. Around a quarter of the country's five million inhabitants live in the area and the fast-growing population has a high proportion of young adults. The predominance of young adults and households without children is especially pronounced in the capital city of Helsinki [53]. High demand for housing has resulted in urban sprawl, but the regional land use plan focuses on densification with development focused in the center and the densely populated corridors around the public transportation network [54]. HMA is the most affluent region in Finland and the location of the biggest and by far most diversely connected airport, thus offering conditions for frequent long-distance travel. At the same time, HMA is also the core of support of the Green Party in Finland with almost a quarter of the votes in the region going for the Green Party [55], which is likely related to a high level of environmental concern among the residents of the region. These features make the region an illustrative case for the purpose of this study.
