I agree with Colin it’s very unlikely to happen. Unless you force everyone to have trackers and they are not perfect I know I have one in my company car, the only other way you can do it is by a mass rollout of ANPR cameras on every road. The infrastructure cost would be prohibitive.
As for Electric vehicles they are getting to the point now where the government is going to be losing to much revenue by not charging them. As of April next year they will have to pay road tax from day one £10 for the first year then year two onwards the full amount and as most of them cost over 40k thats £600.