I have heard from someone I may or may not, that works at an airport that I may or may not know, that some are these drivers may or may not be notorious for "reckless driving" when out of sight during down time.
I sincerely hope this wasn't the case.
To any AC (or any other airline/airport authority) employees that work on the tarmac, please be safe. And safety always first.
My condolences.