<p>A nearly new train preens for the camera at the start of the line.  A metro operator told me that the city now owns forty new trains of this type.  (At least that's what I thought he said.  I wouldn't bet the farm on Tim's Spanish comprehension.)
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(Update, 12/7/2014:  Ricardo Barreiro writes that the A line now owns forty-five new cars comprising eight complete trains.)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/36217981@N02">Tim Adams</a> from San Francisco
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/36217981@N02/15753975528/">Subte metro on A line at Plaza de Mayo station in Buenos Aires, Argentina</a>