An unidentified witness said the "Titanic" star was joined in his bicycle jaunt across New York's East Village neighborhood by fellow actors Lukas Haas, Tobey Maguire and Kevin Dillon, the New York Post reported Sunday.
"It was surreal," the witness said of the stars' bicycle journey Friday. "They were laughing with each other, checking out the girls and having a good time -- but their mode of transport was really un-cool."
The Post said despite the acting quartet's reputation for womanizing and wild times, the actors' bicycles were all equipped with safety equipment such as reflectors and warning bells. Maguire reportedly wore a helmet.
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