hey is it possible to edit tracks? for example

1: change the gravel on a rally track to tarmac so that it could be used for race cars?

2: and is it possible to make autocross track bigger ETC?

thanks

Erm . No, why?

it would be good if you could add hills/bumps to autocross to make a verry good layout for racing, could make verry good tracks

there is no track editor for LFS, and there won't be one for a good few years yet (if ever).