It was a tricky maneuver, and it didn't help that during its approach Messenger had to lose radio contactwith mission control while it flew behind the planet.
The McLarens appeared to be faster than the Red Bulls, and Vettel decided to take a chance on the inside of Webber with 18 laps to go and appeared to veer right too early causing him to lose his rear right after it came in contactwith the other car.