http://www.dself.dsl.pipex.com/MUSEUM/TRANSPORT/motorwhl/motorwhl.htm
a long time ago I remember reading a book about
strange contraptions tried by the english army
during world war II.
one looked like giant monocycles sent rolling toward the beaches
to detonate mines and break havoc on the coastal defenses.
they soon realised these were too instable.
pity I do not have the book and the draft images.
bear