Aston Martin finally appeared on track in the latter stages of the fourth day of the Barcelona Formula 1 shakedown, while Mercedes kept collecting miles and McLaren's day was cut short with trouble.<br>Fresh from turning over 90 laps apiece on Wednesday, Andrea Kimi Antonelli and George Russell traded turns again on Thursday with a combination of long runs and shorter outings to get on top of ...<a class='more' href='https://www.motorsport.com/f1/news/barcelona-f1-shakedown-day-4-mercedes-reliable-as-aston-martin-makes-overdue-debut/10793861/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-F1&utm_term=News&utm_content=www'>Keep reading</a>