Flexable gravel grids/stabilizer

[tomfe]

Has anyone used and or got any opions on the honey comb style expanding gravel retaining systems like those pictured below for use on gravel driveways?
I've only seen it used in subbase on large soft areas but they seem to be selling it as use on driveways.

 

[Rykard]

They have this sort of thing on some car parks too...