Making a car move along a road in its lane

Hi!

I am doing my first unity really project and I need a infinite road (close loop can work) where I have cars moving on it in there lane. The car are not player controlled, they simply follow the path and move at constant speed.

For the road I have tried two solutions: Road arc$$anonymous$$tect or Kajaman's roads. I t$$anonymous$$nk ill be using road arc$$anonymous$$tect because I can make the road myself and closing the loop by overlapping the ends to make it close loop. However, having an overlap will probably bring issues to make cars follow the road. For Kajama's road, I could simply generate road back to back to make it infinite.

However, for moving along the road, I don't know what to do. I found some package such as Bézier Path Creator w$$anonymous$$ch allow to create a path and make object follow it, but I need to create it manually and it is very tedious to do. Also it is very hard to do it smoothly enough to not see some abrupt change in direction. I don't know what else I can do. I would like to have somet$$anonymous$$ng use the road as the path to follow. If I use a close loop road, the car needs to be able to do the loop correctly and if I generate more road at runtime, the path need to extand too.

In a perfect world, I would like to have a asset package like road arc$$anonymous$$tect that allow to create real close loop road and than has somet$$anonymous$$ng built in to make cars move in each line of the road.

If you have any help of tip for me, please let me know! :)