Earlier quoted context omitted.
I'm not sure I agree it's a good idea at all. 30 years later, and the electric car market is still miniscule. There might start to be a market demand for them when petrol is at least twice as expensive as it is now. But there's some wiggle room to reduce the tax on it a lot.
When gas/petrol goes to 2x what it is now it'll be on a journey that is very fast and shoots to 3x, 4x and beyond. This will cause huge economic shocks and there won't be the time then to start building electric cars.
The US however will be absolutely devastated.