McLaren's Lando Norris has become the 21st driver to add his signature to a helmet signed by every living Formula 1 world champion.<br>Organised by Sir Jackie Stewart for his charity, Race Against Dementia, the helmet was part of a prize draw to raise funds for pioneering research into the prevention and cure of dementia. The winners of the prize draw will receive the helmet, having already had ...<a class='more' href='https://www.motorsport.com/f1/news/lando-norris-becomes-21st-f1-champion-to-sign-sir-jackie-stewarts-legendary-helmet/10785816/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-ALL&utm_term=News&utm_content=www'>Keep reading</a>