Racing tricycles for the elderly

For the second time this week cyclists have taken me by surprise. Earlier in the week a unicyclist sped past me. I regard these as trick cycles but this young man appeared to just using it as a means of transport to get from a to b. I did not get my phone camera out in time. Today a tricycle shot past me at some speed. The rider was in a reclining position and was a lady of some years. It looked a mean machine and she was riding with intent. Good luck to her.