I'll be honest I don't get it with di Resta. Yes he has driven okay but not in the sort of way you would think "Wow, that's a future World Champion", so if he doesn't bring money or an extreme level of talent why bother? F1 has always had drivers with financial backing, it's not good but it is the nature of the beast. Bernie used to put an talented driver in the top seat at Brabham and a no hoper with piles of dollars in the second, ditto Williams and Marussia this season. Not a bad principal and one other teams could do well to follow (are you listening Caterham?).