Extending a shipping container home using an interior

This is an idea that could get round some of the size issues of a shipping container as it allows another unit to slide out from inside the container. Advantages being if done on rails for example you could literally push half your room inside the other and lock it up for safety or moving. The concept could work well for not only for things like mobile research labs but also in the field for emergency projects as it would allow doubling of floor space without too much effort. The article was originally posted in 2004 but thought it of use as I myself have only looked at the door area for balcony extension and not this type of slotting module which is a great idea.

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