water tight closure. andrea zittel artist works

hey, just saw a glitzy photo in the march issue of Wired magazine,
http://www.zittel.org/works/wagon_stati ... ion200.jpg
strongly remininiscent of a teardrop trailer. artist creating "living spaces". her website...
http://www.zittel.org/
click on..
> works > wagon stations, escape vehicles, travel trailer units
actually i wondered if the way she designed her sealing surfaces may be easier/more reliable way to achieve a water tight closure. i mean, flat straight mating surfaces rather than a curved mating surface.
b.w.
http://www.zittel.org/works/wagon_stati ... ion200.jpg
strongly remininiscent of a teardrop trailer. artist creating "living spaces". her website...
http://www.zittel.org/
click on..
> works > wagon stations, escape vehicles, travel trailer units
actually i wondered if the way she designed her sealing surfaces may be easier/more reliable way to achieve a water tight closure. i mean, flat straight mating surfaces rather than a curved mating surface.
b.w.