Roland Perry wrote:
Actually, the proposal was for "railcars", terminating just west of the
Milton Road in Cambridge. The proposers then expected Network Rail's
tooth fairy to reopen and electrify the line across the Milton Road
(level crossing) and onwards towards Cambridge station, with passengers
changing trains to start with.

Roland, please stop spreading FUD. The costings included an electrified spur
from Chesterton Junction as far as the east side of Milton Road.

http://www.castiron.org.uk/VisionDoc.php
http://www.castiron.org.uk/Stage1Bdetail.php

(perhaps it's slightly ambiguous from the document, but it was definitely
stated at the time)

Theo