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We now spend, on average, 23% more of our lives just sitting in traffic than we did back in 2008, according to research from the Dutch satellite navigation company TomTom. Mexico City is the world's most gridlocked place, while China is the most congested country overall. The Â鶹Éç's Mike Johnson found out more from Bob Ransdorp, a traffic expert at TomTom's headquarters in Amsterdam. (Picture: A traffic jam in China. Picture credit: Getty Images.)