Something sounding a lot like that was already mentioned in the article:
Several options have been duly considered and politely dismissed. The kids won’t be confined to airtight metal coffins, as Elon Musk has proposed, or made to crawl through a several-kilometres-long inflatable bouncy castle tube, as one Bangkok construction company suggested.
Several options have been duly considered and politely dismissed. The kids won’t be confined to airtight metal coffins, as Elon Musk has proposed, or made to crawl through a several-kilometres-long inflatable bouncy castle tube, as one Bangkok construction company suggested.