I don't know if anybody has seen this, but it is worth a look in my opinion. Especially at the train which departs at around 38 seconds.
I can remember in 1986, we had to live near the Blackburn to Manchester line, whilst our house was being done up. All I kept seeing was Pacers. Although when ever we went on the train to Bolton, we would end up with a first gen unit. I was so annoyed not getting one. That view soon changed when the 104s went.