The _test race track_ and `tx2-auto-3` are used in F1/10 project of [IID][]
group. The `libgoforward` controls the robot to just go straight.
+`libgobackward` is the same as `libgoforward` but with the negative speed. It's
+written in more OOP way.
+
+`libttpp` implements Pure-Pursuit controller with static target points of test
+track. It's based on `libgobackward`.
+
[IID]: https://iid.ciirc.cvut.cz/