Airless tyres

Ok so they may have been around for a while.
What are your opinions regards to performance or every day driving would and will this save us money at all?
Just a option as noone has ever bout this up here, well not that ive seen anyhow.

https://www.google.co.uk/search?q=ai...O&ved=0CG8QsAQ
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http://www.google.co.uk/url?sa=t&rct...FCVU8D_tq5vCMQ
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http://www.google.co.uk/url?sa=t&rct...oRvSPTcbwqP95g
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would love to hear your verdict...

they dont look safe to me

Well, the first thing I can think of, is going at 100mph, and if you want to avoid an accident at that speed by braking hard, you will leave those lovely wheels behind.