Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.
What: Shares of A123 Systems
So what: GM announced an all-electric version of the Chevrolet Spark that will debut in 2013 and be rolled out in a similar fashion to the Chevy Volt. The automaker confirmed that A123 Systems would be providing the battery for the Spark.
Now what: The Spark is a small car and would compete directly with the all-electric Nissan (OTC: NSANY) Leaf and upcoming Ford
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