I searched for railway stations near Uxbridge, and Google Maps gave me this:
With regular trains to Slough on GWR:
However, neither nationalrail.co.uk or Train Line recognise this as a valid journey. Further, all Google searches of Hillingdon station refer to it as a tube station. This, plus the fact every other station on the same line on Google Maps is marked with an Underground Roundel:
Whereas Hillingdon is marked with a National Rail junction icon:
Leads me to think this is surely an error in Google Maps. What I can’t fathom though, is where the information about trains to Slough would be coming from.
Bonus points for information on how to get this corrected.