If you are using the E-G route covered by the current pilot scheme there is a survey to ask about your experience of the service - prize draw for sleeper tickets.
http://www.scotrail.co.uk/wifi
With wifi it becomes even more attractive to use train rather than drive, and potentially the mobile phone signal can be more consistent as well (although that issue was sorted 30 years ago with leaky feeder aerials in Germany!)
Who knows we might drive down use of the M8 so much that it is considered as under used and reduced to a single carriageway (Those who remember David Begg's days as Chair of Transportation will recall such remarks about the M9 "If it was a railway line carrying so little traffic it would have been closed and ripped up years ago")