An eight-year-old boy was spotted a tricycle down the High Paulo de Frontin to Avenida Presidente Vargas in New Town, downtown Rio, Brazil, amongst speeding cars on Friday morning.
After travelling down once, he pushed the tricycle back to the top and had another go.
He said he found the adventure very "cool" and was not afraid.
The boy lives with the parents in a community near the Sambadrome, in the Central Region of Rio. The Municipal Secretariat of Social Development (SMDS) said they will be contacting the boy's family.