I am literally speaking your parents are living in an place which is nothing less than paradise because this place is so natural and in my opinion the fresh air, natural essence all the time and pollution free environment help them to stay peacefully, and yes after driving so long it's obvious that we will find the greyness colour of dust but after an wash it will shine again and for sure will reflect as super blue car. Thanks for sharing this post with us and wishing you an great day. Stay blessed. 🙂