...interestingly, GM is talking about "hopping" the Spark up powerwise with a new
1.6LT engine in the 2014-2015 timeframe, so if you're looking for a small-displacement model, you better look NOW not later.
...not a Spark, but there's some
very interesting info in this
AutoNews presentation:
http://www.autonews.com/assets/PDF/CA74344613.PDF