> JM>  > there might be a good reason for the characters to
 > JM>  > have taken the BART
 > JM>  > for that trip, but I can't think of one.
 >
 > JM> Did they sit or stand for the ride?  Maybe they wanted
 > JM> a padded seat.
 >
 > It didn't say, but that's a possibility, I guess, even for
 > 2 stops. ;)
 > It was a good book, but that tidbit struck me as odd.
 
My husband pointed out another Really Obvious Reason -- BART used to have a 
cheaper minimum fare than MUNI (85 cents for BART vs a dollar for MUNI).  
There are people who would cheerfully take the longer trip down the escalator 
to BART and wait longer for a train just to save fifteen cents.
 
On the other hand, I suspect that the real reason is just that the author was 
more familiar with BART than Muni Metro, and put in the BART ride because 
that's what she knew.  
 
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