A tale of two trolleys

I've changed my hours a little bit so Alf and I can share the commute. This means I'm in the office for a little less time on Tues/Weds/Thur. No less to do though, so I'm having to really focus to get it all done. Which is, of course, all fine, it has meant that I've got less time for lunchtime walks. Which is a long way round to tell you why it is more or less the same blip as yesterday.

However, there is another trolley!! What's occurring?