The world isn't rushing towards electric cars. USA, Europe and China are. The rest of the world isn't switching to electric any time soon, because electric cars are expensive and billions need to be invested in infrastructure to make them viable.
Heck, it's already fragmented - I just looked at the new car inventory for an LA-area Chevy dealer. They have 65 ICE pickups, 11 ICE SUVs, 7 ICE sports cars and 29 EVs, so about 25% EVs, well above the national average. Then I looked at a rural South Dakota Chevy dealer's inventory - 11 ICE pickups, 7 ICE SUVs and that's it. Zero EVs on offer there.
It might not be fractured in a regulatory sense, just that manufacturers typically sell their EVs in one sort of place and their gas-powered vehicles in another, and dealers only stock what they know they'll sell.
It's just a matter of who gets the government subsidies/favorable tax treatment, cynically.
When batteries get cheap enough and PV arrays have been sufficiently tropicalized, there will be some switching in the rest of the world. It'd happen faster without fossil fuel interests being able to get the subsidies, though.