From what I remember reading in a post last summer they are using this on heavy equipment where the short comings aren't noticed as much. There is a company that has taken the tweel design and modified it to a honeycomb pattern. It evens out the pressure and smooths the ride slightly. I can't remember where I read about it though; it was last semester sometime, fall '08. Was either jalopnik, treehugger, or autoblog I read it on.
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