Listen to this article The Maranello-based team had a hugely encouraging first test at Barcelona in Spain last week, with Carlos Sainz and Charles Leclerc consistently near the top of the timesheets throughout the three-day session. But while the new F1-75 looked to be in good shape compared to key rivals Mercedes and Red Bull, the situation could change significantly in Bahrain if, as is suggested, the other squads unleash some updates. Paddock speculation at the Barcelona test hinted that both Red Bull and Mercedes are waiting until the Bahrain test to reveal some of their most aggressive aero developments that they hope will help them start the season at the front. Ferrari team principal Mattia Binotto is mindful about the potential that Mercedes and Red Bull have to improve, but he still thinks that his own team can extract a lot more performance from its current F1-75. Speaking about the car plan for the Bahrain test, Binotto said: “It will not be much different compared to what we’ve got. “I think that the first step for us will be to optimise what we have. We …