Even as a child our summer trips to the province would always make me sick. Travelling to Baguio when I was a teenager made me sick, as I reached Pangasinan, motion sickness would ruin my day. As we go along Kennon road I will feel doubly sick.
I thought I was done with having motion sickness at this age, only to experience it again when we went to Laguna via the Rizal route. There was no problem with the condition of the cemented and asphalted road but the curves and zigzag road really made my balance crazy. Upon reaching Sinoloan on our way to Paete Laguna, my stomach got topsy-turvy.
It was a scenic route along Sumulong Highway, some called it the Laguna loop, very few vehicles pass this route, I saw mostly cyclist (mountain bikers) and motorcycles trekking this route. The greens along the way are a welcome view and pleasing to the eyes. However, I don’t recommend this route in the evening it might be dangerous and its gonna be creepy!

Notes on Motion sickness:
Motion sickness is a form of physiologic vertigo. It is caused by repeated rhythmic stimulation of the vestibular system in a car, air or boat travel. Some will feel vertigo (feeling that you or your environment is moving or spinning.), body weakness, nausea and vomiting.
It can be suppressed by supplying visual signals that more closely match the motion signals being supplied to the vestibular system. Looking out the window and watching the environment move when experiencing motion sickness associated with car travel, provides the vestibular system with the visual sensation of motion , but reading a book provides the vestibular system with the miscue that environment is stable.
With these, it is better to look at the window than read a book while riding the car. It is much better to take over the counter medicines to help you with motion sickness. But one side effect of this drug is you will feel sleepy.
Reference:
Essentials of Pathophysiology: Concepts of Altered Health States
(Point (Lippincott Williams & Wilkins), 2002 , by Carol Mattson Porth