This is an odd account I lived once when I used to go to school. I was 14 or 15, I do not clearly remember. Nothing like that happened before or afterwards.
I lived in Riga in that time and commuted to school every day. My commute included taking a tram and then a trolleybus. To those who hear about it for the first time it is like a baby from a union of a tram and a wayward bus. It has a trolley pole and gets electricity from the cables above like a tram, but has wheels like a bus and does not use rails. For short distances it can move without electricity supply because it is awesome like that (has a rechargeable battery in its rear).
Back to the story. In order to get to the trolleybus stop, I had to cross a wide square. The stop was situated on one of the streets adjoining the square. I had this one advantage that I could see a trolleybus coming from afar across the square and could hurry up to catch it if necessary.
That morning I was walking as usual and I saw just that - a trolleybus coming from afar, so I sprinted to the trolleybus stop. One last glimpse, I looked over the shoulder to see if it indeed was coming and it was, in fact about to round the corner but was waiting for the light to change. Victoriously, I trotted to the stop to join the crowd of people who were already there and eagerly waited for the thing to round the corner, except that it did not. That seemed odd and I waited a bit more. The cars that had been waiting at the lights passed but there was no sign of the trolleybus. Curiously I walked back to the corner from which the trolleybus should have come, thinking that perhaps it had some technical issue, however, there was no sign of trolleybus there. I looked around thinking that maybe it had passed the stop for some reason, but there was no sign of the trolleybus being in the area at all. Mind you they are not small or even car-sized; those are quite big low-floor high-comfort things that cruise around with a chain rattling at the front wheel (for the visually impaired people to hear their approach since they are not loud per se). So I went back to the stop and waited with the rest of people. I had half the mind to ask if anyone else had seen that, but in the end I did not have the heart to do it.