I phoned the gentleman who owns the company, one Mr Bard, to find out why exactly anyone would want this.Not only that, but according to Mr. Bard's halachic novella, every sukka will fly to Israel on Air Moshiach, including those purchased from his competitor. This is rather shrewd. Instead of promising some benefit or feature unique to his own product, this Jewish businessman is making a sales case out of something that he believes is true for any sukka.
He explained to me that the Gemara says that when Moshiach comes, all shuls will go to Israel. The Kedushas Levi adds that so will all Jewish houses which were filled with Torah. Sukkahs going to Israel as well, however, are Mr Bard's own addition - "if houses that are filled with Torah go, a Sukkah, which is a piece of a mitzvah, must go too."
There's no actual need for a sukkah to be transported to Israel in messianic times
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