Back to the childhood memories.
Until the 2000s was common at the brazilian ghettos or whatever downhill, kids go down streets on wood street luges ( go-kart? ). The kids were wild, sometimes going down in 3 or more on the same kart. Sometimes karts had body trucks, and sometime they hit something.
The last time I remember me and my friend hit a volks car. Luckly the wall stop it.