Marc Priestley now wonders ‘how many opportunities’ one Formula 1 driver will get to keep his seat on the grid with ‘very serious’ questions needing to be answered quickly. The grid for the 2025 season is already starting to take shape with only Alpine and Haas still to announce either driver. Only Red Bull, Ferrari and McLaren have also locked in their line-ups for next year. Yet a host of talented drivers in and outside the F1 paddock are available. Ferrari put Carlos Sainz in the shop window this February when they signed Lewis Hamilton to a multi-year deal. Fellow Grand Prix winners in Dan…