Confirming MHC's contribution, my lady-wife and I travelled by WiFi-equipped coach from Inverkeithing Ferrytoll Park & Ride to Aviemore earlier this year; and I made the following observations, using my ASUS Eee Netbook.
WiFi and Internet
As most of the long-distance and medium-distance coaches in Scotland are WiFi/Internet equipped, I took the ASUS Netbook with me - “Research”!
The WiFi/Internet connection was reasonable up to about Kelty, resuming around Perth, Pitlochry and other similar places at that southerly stretch of the A9, followed by about 50 miles of No Contact.
It then resumed through each village area of Kingussie, Newtonmore and Aviemore. In each of those areas, various versions of BT predominated, around 50%, with SKY about 40%.
The WiFi within the coach was “Four Bars” out of five, so strong enough. Thus it is the external Internet connection via roving Mobile/Cell Phone connections that is troublesome or non-existent.
When working, using BT Wholesale Tester, the speeds ranged from 600 Kbps to 1.8 Mbps.
Hence decidedly slower than at home, 15 Mbps.
I could not get my e-mail Contacts List up at all; and predictive Addressing was very intermittent, so that I generally had to resort to REPLYing to earlier, un-associated messages.
Overall, I was not impressed, unlike my previous tests about 4 years back, Ferrytoll to Edinburgh.
Just north of Perth, I did manage to get Meteociel Satellite coverage and relate the cloud margin to what I saw up in the sky, the boundary between the sunny south (for us up here) to the cloudier north.
I also accessed FlightRadar24 briefly; and the London Underground Live Trains site.
Some years back, I travelled by bus from Inverkeithing P&R in to Edinburgh, with contact the whole way, including SKYPE and LogMeIn to my PCs at home, carrying out various actions remotely on them, eg uploading weather data from our garden Met Station and e-mailing it as an attachment to our son, using my now-defunct ACER 101 Netbook.
Interesting reactions from other passengers during the SKYPE contact with my lady-wife, as the TV sound could be heard quite loudly in the background.
Played about using Screen Capture at both ends of the LogMeIn link, as reasonable proof of my activity.
I was amazed at the quantity and strengths of WiFi circuits observed in the middle of the FORTH Road Bridge, bearing in mind the relative "remoteness" when at the middle of that structure.