Most these can be done with a few attempts. The one I could not get for the longest time was the #10 the Lancia at night. This one can be very tricky but I've found a great video that shows an easy way to complete it usually mainly roads to make it even easier.
The only tricky part that might take a few restarts is the beginning. Just watch the video to see which trees to split and follow the suggested line near the end and from there it's home free.
One other piece of advice would be that you can use rewinds AS MANY TIMES AS YOU WANT! This doesn't effect anything. So just get the beginning down and use rewinds as needed.
Credit to NiZZULiVE for the great youtube video. Got it my third or fourth attempt and had 3-5 seconds to spare!
Edit:
For #10, set the driving line to full. It will show you the best path through the trees.