BOSCHICON 21OE Wiper Blade, Up to 40% Longer Life* - 21" (Pack of 1)

What does the A and the B stand for ? I thought all blades could fit either the driver or passenger side?

this may sound stupid, but on their website they list a 22A for the left and 22B for the right. do i really need to purchase the seperate models?

Can this be used with my Honda Civic 2008? Is it compatible?

Does this work for the Tesla Model S?