I think what he meant as 'bad advice' was the coasting in neutral during traffic. If an emergency came up and had to accelerate you would not have ability to easily get out of the way. Yes yes of you're paying attention then you would know what's coming toward you. Just my two cents as I'm still a "novice" driver with < 5 years of driving. I was just taught to always have the car in gear. Of course you would have the car in neutral after coming to a complete stop.
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