Just running the 2R37 Paddington to Reading in journey mode on Xbox and noted the following: The ice/snow on the windscreen doesn't quite seem to move exactly with the sway of the cab, giving the impression it's not on the glass. Occasionally a few snowflakes swirl around inside the cab. Whenever another train passes, the windscreen totally clears of ice/snow and then gradually builds up again. Not sure if this is GWE or Class 166 specific.