U.S. agency asks Tesla about changes to driver assistance system

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TESLA MTRS (NASDAQ: TSLA) Delayed: 354.61 +5.66 (1.62%)
Previous Close $348.95    52 Week High $269.32 
Open $349.58    52 Week Low $141.05 
Day High $354.88    P/E N/A 
Day Low $349.20    EPS $-0.62 
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