I used the grass more than that:
1. Hatzenbach (although I think its closer to Hocheinchen)
2. Adenauer Forst.
3. I passed the 4th place car on the right by using the grass just around the tight corner at Pflanzgarten. I wasn't about to risk touching him for a five second penalty.
4. I passed the 2nd place car on the left on the grass (for the same reason) between Tiergarten and Hohenrain.
5. And, although I don't think there was any advantage to it, I took the last turn wide at Ziel and ended up on the grass as I passed the 190sl for the one thousandth and final time and I drove this mission.
And I don't feel bad about any of it.
In case you haven't seen it, here is an awesome map so you can see the locations.
https://www.gtplanet.net/forum/showpost.php?p=1576354&postcount=1
1. Hatzenbach (although I think its closer to Hocheinchen)
2. Adenauer Forst.
3. I passed the 4th place car on the right by using the grass just around the tight corner at Pflanzgarten. I wasn't about to risk touching him for a five second penalty.
4. I passed the 2nd place car on the left on the grass (for the same reason) between Tiergarten and Hohenrain.
5. And, although I don't think there was any advantage to it, I took the last turn wide at Ziel and ended up on the grass as I passed the 190sl for the one thousandth and final time and I drove this mission.
And I don't feel bad about any of it.
In case you haven't seen it, here is an awesome map so you can see the locations.
https://www.gtplanet.net/forum/showpost.php?p=1576354&postcount=1