IET 800307 waits to leave Paddington working the 15.30 to Weston-super-Mare. This train will travel via the GWML through Reading, Swindon, Bristol and then to Weston. At the present time, it will run using electric power for about half the distance and then will switch to diesel power. When under diesel power, these 800s are not able to keep up with the HST timings. The forty year old HSTs both accelerate faster and will maintain a much higher and sustained maximum speed; progress.....hmmmm?
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