Slewbot robot draws

The Slewbot might be touted to be a drawing robot, but it sure as heck has a long way to go when it comes to churning out proper masterpieces. Back to pre-school, Slewbot! This drawing device by David Williamson plays with the concept of using two simple actuators to perform drawing instead of taking the traditional route that involves forcing a conventional two-wheeled robot to do the job. No idea on what the practical, real world application of such a robot would be, perhaps they could be used to send love letters to someone else in the future?