The Sport Chrono is useful for timing how long your trip to the grocery store took, or how long you got delayed by rush hour traffic, and that's about it.
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Some people's drive to the grocery store is like being at a track. Not everyone lives in the desert.
As a matter of fact, we were on some of the twistiest roads around here, just outside of Barber Motorsports park, and we passed a grocery store, and a river, and a cop.
I think Porsche's steering wheel options may be why they left the control on the stalk. If it had a simple button to push, just like a tiptronic button, it would have been spot on.