[AdrianNorman]

Hi Baz and Scuderia_Turini,
The 'time lag' over trying to synchronize the packets of digital information was the main problem. For example, making your car switch lanes on your local track was easy of course but getting that action to happen on screen and in sync with the remote track was the issue. The time lags and general sync issues also saw the inclusion of the half-straight power-break track piece which was was an additional way of getting a signal to the program to report the location of a car. The powerbase expansion modules were to accommodate analogue racing, digital racing, wireless controllers and any other ideas Sagentia could develop.
There's not much else to say on the subject since that is where it ended - with the time-lag and sync issues. As ST suggests, think what it could have been like if it was developed today!
Happy Racing
Adrian