consider :
we all know grace doesnt drive. but I like to imagine that he loved car rides (source: I like car rides). im imagining he grew up in a more rural area like me, and he fondly remembers always asking to help with errands because he loved watching the trees. he loved the small vibrations of the car, the sound of gravel and pebbles and brick and dirt and asphalt, the grass brushing past him and the sun warming his cheek. sometimes in his adult life he would take the bus to work, just to watch things go by. it's not the same in a city, but it's still nice.
he indulges in this memory with rocky while on erid, not expecting much from it. but rocky is Determined to build whatever makes grace happy in his biosphere. they build him a track. it doesn't go anywhere, but they build him a small trolley that pulls itself along the drag, most likely by use of magnets or something. they line it with trees, and grace cries the first time he takes a ride. it's so sweet, and it feels so much like home. rocky is glad he made his human happy. grace likes to eat his breakfast along the āfifteen minute drive it is there and back.
