The second pre-season Formula 1 test begins on Thursday as the teams head to Bahrain for what looks certain to be three intensive days of running. The first three-day test in Barcelona two weeks ago was the first opportunity for the class of 2022 to put some serious miles under their belts in the all-new ground effect cars that represent the biggest technical reset in grand prix racing for nearly 40 years. The first grand prix, also in Bahrain, is now less than two weeks away – on 20th March. So this is it: so much to learn and so little time before the new cars are pitched into the white heat of competition. Here’s what we know so far and some indication of what to expect this week.