Automakers may turn to an online auction system to buy and sell carbon credits in the near future. As Automotive News reports, the Environmental Protection Agency will soon stop allowing automakers to simply pay fines for exceeding their carbon emission limits and will instead move to a carbon credit system. Under that plan, more efficient automakers will be able to sell the credits they don't need or use to automakers that want to build less efficient products. Unfortunately, automakers are notoriously competitive and likely won't be willing to help each other out, even if it means making a little extra cash.

The solution is to use an anonymous market where automakers can buy or sell credits without ever knowing who's on the other end of the transaction. Several companies have already signed up for accounts with Mobilis Trading, though none have actually bought or sold credits just yet. That may change as the government puts ever more pressure on automakers to reduce emissions.

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