A night at the speedway
The allusion to knights and jousting is apt. Like knights in armour, the drivers especially of the sprint cars have very restricted vision. They can peer through the grille in front and can see a bit to the left but their right-hand vision is blocked by a wing and within the confines of the cockpit—with helmet and neck brace in place—they have very little opportunity to turn their heads. To make things worse, other cars are flinging up dust and mud that also helps to clog their vision.