Haven't watched the replay, but 1:08.24 is almost one second faster than the 103% benchmark of the world record. That's about as close as I usually get to wr times after a little over 16.000 online-kilometers in LFS (which is nothing considering that I've been playing LFS for more than three years, but it's still valuable experience). Seeing that you have put in 4.487 km since december 2006, and that you're obviously a dedicated FOX-racer, I'd say your driving is just as one would it expect it to be. If you keep going at that rate, you'll soon find out that you'll get faster the more you race, but progress naturally won't be as fast as it was in the beginning.
Still, I have 3 suggestions for you:
1. Also drive other cars every once in a while, as that will help you to find different lines and different techniques which might just help you finding those extra 10th in the FOX.
2. Download wr-replays and see what's different. Where are the braking points, which lines do they take through turns, and how much speed do they carry into, through and out of turns and how fast does that maybe make them on the straights?
3. Practice!