Henrik Fisker abruptly resigned from the car company he started after unspecified disagreements with the executive management team. International, the big truck maker, now offers the Transtar Class 8 semi that runs on CNG. Pollution continues to be a problem in China, and the country has a plan to get the highest polluting cars off the road. All that and more, plus we take a look at how fish behavior is helping Nissan develop its autonomous technology.