Yeah, former world champion Kimi Räikkönen rides motocross on his time off of driving Formula One cars.
Most F1 drivers are prohibited from doing any kind of dangerous activity when they're not on the job, particularly after rising star Robert Kubica nearly died in a rally crash.
Lotus team boss Eric Boullier addressed this concern last week (when Kimi went out riding) saying, "one of our drivers is famous for doing pretty much what he wants".
(Hat tip to Axis of Oversteer!)
Photo Credit: MMP74