Two United B737s begin their takeoff roll at the same time, rotate at the same time, takeoff and turn in opposite directions at the same time. My flight, UA1478 (B737824 [N37253]) from IAHIAD was on RWY15L, with the other B737800 on RWY15R.

Parallel takeoffs are not that unusual at Houston Bush Intercontinental (IAH), but this is the first one I've caught on video from inside the cabin.

Video continues until the 737 climbs above the clouds.

Recorded May 8, 2014.