Having seen both this videos many times and drawing lines longitudinal to the cars axis, it seems both were on converging vectors at the moment of impact, so it seems they were turning on each other a split second before …. He should have made the pass a few laps earlier on Vettel and not even been in this postion as he had newer tires, and more speed but he kept making strange attempts to undercut Vettel in the laps before on the hairpin coming into the straight. …

Read the original:
Perez penalised for last-lap crash with Massa – F1 Fanatic