I made my own before but I'm getting lazier in my old age and I have stopped hitting thing and people with the car. I am finding my driving is so much better that I have been able to either keep away from the stupid drivers or just back off and pick a better spot to pass. Why wreck yourself if you don't have to. I have been hit many times but I don't see were that would make me build wings.
Besides you miss a level of consistancy with pre made wings.