SAN FRANCISCO (KCBS) – A skateboarder’s adventure along streetcar tracks in different cities, including along San Francisco’s cable car tracks, is making the rounds on social media.

READ MORE: Wild Fan Celebration Erupts Following San Francisco 49ers Last-Second Playoff Win

The video features a Portugal-based engineer riding a specially-designed skateboard along the tracks for a joyride like no other.

Ricardo Marques designed the skateboard after a challenge from Portuguese media outlets, who wanted to see a board that could be used to ride the rails on cobblestone streets in Lisbon, Barcelona and Rio de Janeiro.

The skateboard features a modified front wheel than can fit inside the groove of a streetcar or cable car rail.

READ MORE: Officials Warn Waves, Rip Currents Expected to Be Dangerous Through Monday

ALSO READ: Teens’ Harrowing, High-Wire Antics On Golden Gate Bridge Captured On Video

Marques wound up bringing it to San Francisco, and took video of himself rolling down California Street.

“We’re doing everything we can to encourage people not to try this,” said San Francisco Municipal Transportation Agency spokesman Paul Rose.

“This type of dangerous behavior is not encouraged and could jeopardize the safety of themselves and the people around them,” the San Francisco Municipal Transportation Agency in a statement. “We will work with the police department to determine how we would respond, but we will enforce when we see this.”

MORE NEWS: UPDATE: Wind-Whipped Wildfire Near Big Sur Forces Evacuations; 'Some Pretty Surreal Fire Behavior'

Marques told the San Francisco Examiner riding the rails in San Francisco “was scary. But spectacular, truly spectacular.”