electric cars will be available only to very rich people. And gasoline is prohibited due to "non-environmental friendliness." So that either alternative energy sources, or massively switch to horses)
Is it cold in space? A common misconception. There is no way. There is no substance that can be cold or hot. Vacuum.
Therefore, convection exchange is absent, only radiation works (I dont remember exactly, but about 5 times worse). Therefore, radiators should 5+ times the area.