Vettel could also try the flying final stint on softs here, very old softs at the end for Ham vs new softs for Vettel. If he pits and flies for 12 laps, it is possible and he'll be way way faster by the final couple of laps.
Brundle talking about drag, has anyone noticed Ferrari's top speed without DRS? A couple laps before the pass Ham hit 333kph with drs while Vettel got DRS and hit 326kph. So presumably he's somewhere around 312-317kph max without drs depending on how good their drs is?
312 vs 333kph looks roughly right for how quick he closed the gap at the end of the straight.