Self inflating tyre.

[F Body]

Now this is a dam fine idea

Basically an integral tire component that uses atmospheric air to automatically inflate the tire while it is used. This ensures maintenance-free, constant tire pressure over the lifetime of the tire.

http://www.selfinflatingtire.com/index.html\" target=\"_blank\" rel=\"nofollow\">http://www.selfinflatingtire.com/index.html

[ianjpage]

hmm interesting