Why would it happen elsewhere, unless other countries adopt the same tax policies? The main stimuli behind it was ridiculous tax on new vehicles that was absent on electric cars - if a new Tesla S costs the same as a basic VW Passat, it's a no brainer that Tesla sells better. But even in very wealthy countries(UK) electric cars are still much more expensive than normal cars and when I was buying 2 new cars last year it just didn't make any sense to purchase electric - the saving on a petrol car vs. Electric would pay for more years of fuel than I plan to keep the car for. Now, if those other cars were taxed at 100% or if the fuel was even more expensive than it is - then sure, it would make perfect sense. But as it stands now, no one is breaking into the cheap car market.