I like the idea of starting to wean off from fossil fuels and there are countries that are well more advanced that we are. I do think this plan is too daring and I'm not sure if it's workable. The thing that will pull us away from the combustion cars is research and development which will drive the market to adopt other technologies. Simply build a better product and the consumers will follow.
The moment that electrical cars become cheaper and comparable to combustion engines for things such as distance, easy recharging, etc, you can say bye bye to combustion cars, and for good reason. At some point in history we will look back at combustion cars and laugh at how we put up with noisy, smelly clunkers to take ur around town.