Perhaps Ms Shriver should have checked the BBC when she got back to London, as it was well-placed enough for me to pick it up:
https://www.bbc.co.uk/news/world-europe-47642298
The driver is an Italian citizen from Senegal. It's a good thing that the astute Italian kid, Ramy Shehata, born to Egyptian parents, and currently without Italian citizenship, intervened or the whole thing would have gone up, resulting in a huge loss of young lives.
Lionel Shriver's next novel will be titled
We Need to Talk About Ousseynou Sy. I expect it'll make good reading and be made into to film.