It happened again and again in the past. For example for tobacco, leaded gasoline, banned pesticides (banned in the Western world), banned dirty fuel, etc. Whenever the West moves on into new tech, regulations, lifestyle, the old stuff gets dumped into African countries.

For two main reasons:

1. African legislator don't immediately "copy-past" Western laws. And by the time they realize their mistake, it's usually too late, as powerful lobbies and private interests resist any change (e.g. African countries have unsuccessfully tried several times to ban 2nd hand clothing. But the economics are just too powerful, and they get bullied into giving up any bans)

2. prices. As soon as the Western world bans traditional cars (i.e. internal combustion vehicles), their prices will collapse. And Africans will buy them.

And most interestingly, if the same patterns continue, Western companies will have branches in African countries making internal combustion cars for the African markets. (just like DDT is still being made and sold in Africa, even though it has been banned in the Western world since the 1970s already... and by Western branches or Western owned companies)

Capitalism is super weird. It has no ethics, nor a humane/STEM logic, only greed...