How do carmakers decide which way a particular model's windshield wipers wipe?

I have owned 2 cars with 2 different wiper patterns; I had a Chrysler Concorde with the typical wiper pattern you see on most vehicles (passenger side to driver side) while my current car is a Honda Civic with center-folding wipers. Having seen vehicles on the road with both wiper types, I have often wondered how car companies make that decision.

Its made by designers when deciding what market will be its main user. E.g. If european its wipers will tend to sit on one side. If say UK needs to be on opposite. As such most common cars have ability built in to simply fit either side system.
more specialist cars or low volume tend to try and fit single market or even use just a single blade centred on screen so can wipe either way.