For context, California has ~ 8,000 fossil 'stations.' I *think* that a station serves one vehicle at a time and many stations serve up more than one type of fossil.
At current rates and costs, 1000 years and $3*10^6*4000 = $12 Billion should do the trick ... unless the car is driven outside of CA.
And if the above is not convincing

It is insanity. Something Trumpers or AGW denialists could love.