SoClose

Agree. Surfing is the most difficult sport that you'll find. A zen thing, like driving on the edge...
MMA, depending on what kind of car you drive

Robert Henriksen

Especially just before grid

Ernie J

Table tennis, hand / eye training. biking mmm its ok. Need HP not pedal power.

montoya

Sim racing obviously, or any form of like competitive racing, such as for me model car racing. Concentration and feel for speed are the same- you just aren't in the car.

Conditioning to help keep you focused- any aerobic sport.

Ski racing is a good combination of the two- look at Bob Wollek. You do well at that, and racing should be a natural. My son ski raced with a kid that carted and eventually won a ride or two in formula mazda. Despite not ski racing full time, his natural talent and instinct for line and speed allowed him to win many slalom and GS races against more experienced competitors.