70% coverage?
Used it yesterday between Euston and Birmingham - bar a couple of dropouts in tunnels it was spot on. Much better than National Express (or whatever they are called this month) on the East Coast.
Steep though. 9.79 for 24Hrs, which you need to cover your return journey.
Problem being my return journey was in an old InterCity 125, half of which was still in BR livery and had signs in the window stating "On hire to Virgin" - I'd be embarrassed too if I'd charged someone 50 quid for a ticket only to find the return journey was in a 30 year old piss stained train that reeked of electrical fire the entire way.