The tricky part is to get them to slither forward and to “do the sidewinder”…  It takes coordinated motion along the segments and a lot of trial &amp; error design work.  These are version 5 (with 32 motors, nice binary relationship there) and version 3 (with 10 motors).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/44124348109@N01">Steve Jurvetson</a> from Los Altos, USA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/jurvetson/32689486/">Robo-snakes</a>