The racing veteran, who spent 12 years as a driver from 1984 to 1996, said that there are occasions when many lucky enough to be on the guest list don't even turn up, with the new Las Vegas track a particular victim of no shows.
In an exclusive interview with The Sun at F1 75 Live at London's O2 Arena, he said: "I'm one sentence away from the end of my career at all times, or being cancelled.
FORMULA 1 legend Martin Brundle has branded his famous grid-walk interviews "car crash TV" and admits he's walking a career tightrope.
Think back to Silverstone last year, think back to Las Vegas last year.
"Because we watch Formula 1 year in, year out, racing ourselves, and they're on the grid and they actually don't know anything about it, and quite clearly don't really want to be there.
