Former F1 driver and Sky Sports pundit Martin Brundle has said Carlos Sainz has gone down a "cul-de-sac" at Williams, warning the Spaniard that his F1 career is "stalling out" at exactly the wrong time, while rumours surrounding a potential move to Audi continue to swirl.
Source: [Yahoo Sports](https://sports.yahoo.com/articles/sainz-warned-f1-career-stalling-060100100.html)