Speech was thus corralled, in the manner of cattle.

California appears to be on the verge of becoming the first state in the United States to do the same to cars – and driving.

If you do not drive a government-approved EV. 

These – and these alone – will be allowed to proceed into (and transit through) Zero Emissions Zones, which will be anywhere the state's regulatory apparat says:

"These zones could be at the city level involving all vehicles or focused on and encouraging the adoption of zero emissions delivery trucks through localized green loading zones that preferentially allow zero emissions deliveries or green logistic zones that restrict internal combustion delivery trucks at certain times and locations such as those in effect in Shenzhen, China."