Hartley, contesting the Formula Renault 3.5 series as well as Euro F3, told the New Zealand press agency NZPA that his calendar had become too busy.

• 哈特利，争夺雷诺方程式3.；5系列以及欧洲F3的，告诉新西兰新闻社NZPA，他的日历已成为太忙