In 2004, Defensive Driving Online, Ltd. hired Vertex to create the administrative back-end for its new video defensive driving course, Wheels in Motion. While the course materials themselves are not delivered on the Web as with the online course, the student registration, log-in, course tracking, test grading, and certificate completion, as well as inventory, product shipping and tracking, certificate printing, and many other functions were delivered via a Web-based application – including those handled over the telephone (via an IVR system for which Vertex created a programmable Web service). The course is also provided to digital cable subscribers by means of applications written by Vertex to communicate with Time Warner’s digital cable subscription service.