No "Electric Car Transition" Modification of "Oil Price" Effect on "Motorist" Membership

Despite having fully converted the Holy People’s Republic of Canadiastan to electric vehicles, 95.5% of the electorate are “Motorists” due to the “Tar Sands” effect on “Oil Supply” → “Oil Price” → “Motorist” (Membership).


Is it that high because of that?

To be fair, achieving 0% oil price is super easy regardless of the country you’re playing so 95.5% motorist membership has nothing to do with tar sand or whatever. But it is still legit that oil price shouldn’t affect motorist approval/income/membership if electric car transition is at 100%.


Doesn’t it look too vague to directly link it motorists membership with GDP?
Shouldn’t there be factors affecting this?