Trains would include: 220/221, 66, 800 (For Taunton - Bristol Temple Meads) 43, 158 (For Taunton/Weston Super Mare - Gloucester) And this route would also include The Birmingham Cross City Route with Redditch only to Birmingham New Street Though.
I like this suggestion - but a 3 hour route may be too long for DTG at this stage and I'm unsure of distance. Would love to see a voyager though.