The Outrageously Expensive Freewheeler Wireless Outdoor Speaker

It's called the Freewheeler, and it's a wireless outdoor speaker that won't do anything unexpected or special except roll around a little and 'freewheel' you out of $20,000.
Features include: wireless up to 656 ft, recharging station, and the capacity to project the quality stereo sound you'd expect from two speakers out of just the one unit. And apparently it's pretty good sized (as big as small car tire???) and that could be a pro or a con, depending on your taste.
It's got a nice contemporary design, and the "roll it around the yard" feature certainly is convenient, but I'm still not sure why the price tag is so high at £10838.74. Anybody have any idea?
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