A personal CO2 calculator called Commute Greener! hit the app store day. Volvo Group, which developed the online site and smartphone app (downloadable for $3.99) had initially tested a prototype internally and showed that employees reduced their CO2 emissions from commuting by 30% on average. Commute Greener! entices with a one-two punch of personal-data diving and competition. After calculating your baseline commute, you can set weekly reduction targets, track your cumulative damage, and compare your data with other users.
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