Given the darkness, no one apparently witnessed the accident. The vehicle was not found until after daybreak because it was hidden in the deep ditch.
The synthetic marijuana has led to the hospitalisation of some consumers, including minors.
"Palma is the best city in the world to live in," said Stephen Mullen, the director-general of Primark in Spain and Portugal.
"I was happy to have taken it. Could have been a mate."
Tim Henman, Carlos Moya and Mats Wilander are among those competing in this year’s Legends Cup ATP Champion Tour Event from 6-9 October in Palma.