Yeah, I've got some learning to do on the smooth driving, but I am getting there.
As I've said though, the smoothness of the track makes a big difference (look at run times of US vs UK). I race on a particularly rough track, so my run-time estimates are conservative. Then again, that's why we have a forum so everyone can post their point of view - average all the totals, and you're probably near the correct figure.
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