Carlos Sainz has insisted that while it was frustrating to miss the Barcelona shakedown, he has not lost any confidence in Williams.<br>Williams decided to skip the private testing at Circuit de Barcelona Catalunya, "following delays in the FW48 programme."<br>"Yeah, frustrating. Obviously, I'm not going to hide away from the fact that I would have loved to be in Barcelona to get those three ...<a class='more' href='https://www.motorsport.com/f1/news/carlos-sainz-missing-barcelona-shakedown-frustrating-but-williams-confidence-unchanged/10797063/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-F1&utm_term=News&utm_content=www'>Keep reading</a>