The trailer gives us a better look at Ivan Vanko, aka Whiplash (played by
Mickey Rourke), at work developing his own arc reactor -- the same technology Tony Stark uses to power his Iron Man suit. Vanko builds his own mechanized weapon, and we get to see the power of his electrical whips when he slices Stark's F-1 racer in two.
With pressure building on Tony from both Vanko and the U.S. government, we see him at work as well. In his laboratory, he aims a laser at a new, triangular-shaped arc reactor, and apparently almost blowing himself up in the process. But judging from shots of the updated Iron Man suit later in the trailer, he does get the triangle reactor to work.
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