From the article:
* 40 million BEVs and PHEVs in 2024
* 275 million expected in 2030
For reference, there were 278 million registered vehicles (auto and commercial) in the US in 2022.
Shell’s projection would require 100% change-out of all vehicles in the USA in the next six years and 100% adoption of EVs in six years.
I took that to mean worldwide tallies.