Mercedes in both practice sessions for Germany GP . Tops Friday 's morning and 0.044 seconds runs in his Red Bull . Triple world champion Sebastian Vettel led a Red Bull one-two in practice for the Hungarian Grand Prix Friday as Mercedes struggled with new tires and the blistering heat in Budapest . Teammate Mark Webber second fastest . Sebastian Vettel fastest pair Lewis Hamilton and Lewis Hamilton off the pace .
Mercedes in both practice sessions for Germany GP . Tops Friday 's morning and 0.044 seconds runs in his Red Bull . Teammate Mark Webber second fastest . Sebastian Vettel fastest pair Lewis Hamilton and Lewis Hamilton off the pace .