Tesla stock falls 6 percent after Internet video captures Model S in flames. Tesla says a large metallic object hit a battery pack, causing a fire that firefighters struggled to put out. Tesla stock is up more than 400 percent this year.
Shares in the electric car company dipped Wednesday on news of a car fire outside of Seattle earlier this week. Investors are wary of the potential hazards of lithium-ion batteries, which power 'green cars' like Tesla's Model S.