Read the following context and choose the best option to answer the question.
Context: I do n't even ride my bicycle on Newsom Station any more because of the speeders . Sometimes , I do n't feel safe making a left hand turn into my neighborhood because of the cars racing down the hill . Yesterday , I left my neighborhood to walk to the Bellevue Announcements sign about a mile away to take the photo for the blog .
Question: What causes the narrator much anxiety when out for a bike ride ?
Options: 
- None of the above choices .
 - Passing cars .
 - Loose dogs .
 - Street trains .


Passing cars .