Vettel worried that Red Bull will lack top speed in Korea 29 September, 2013 Sebastian Vettel celebrates with Adrian Newey after winning the 2012 Korean GP Runaway World Championship leader Sebastian Vettel heads to Korea searching for an eighth win of the season, but is expecting a tougher race weekend where he is wary that a lack of top speed may hamper his ambitions on a track where Red Bull have won for the past two years. Speaking ahead of the weekend in Yeongam, Vettel said, “The track in Korea has a bit of an unusual layout. The long straights all come right at the beginning and the turns at the end. I love the curvy part because it is a lot more fun. “The straight lines and sharp turns can be a little boring. They are also our weakness, because we often lack … top speed there,” explained the tripe World Champion who is heading relentlessly for a fourth consecutive title. Vettel, who won the Korean GP last year, has a sixty point lead at the top of the table over closest rival Fernando Alonso. (GP247) Subbed by AJN.