That’s because the airport’s fleet of taxis has just been replaced by 167 units of the Tesla Model S, quite the luxury car for an airport taxi. The airport has said the change was made in order to reduce CO2 emissions, although it’s still obviously a drop in the bucket compared to what the planes produce.
We’ve got a video of the airport congratulating themselves here, or you can check them out if you’re in Amsterdam. Just do it before getting too high.