as the door drops underneath? WoW ~! You can get really soaked twice if it's raining hard when you try to get out, can't you? And if both sides are open, the entire interior can just get totally soaked in the time it takes to open and close everything - not the most practical door scheme I've ever seen. And certainly nothing I'd spend big $$ upon.
Just my $.02 - but they are cool! Not practical, but cool.
