Someone should make a more general purpose version of pop vs. soda that accepts user-submitted polls. They should make it worldwide, for the non-U.S. english speakers. Then that person should add the poll "Emergency Brake vs Parking Brake vs Hand Brake". Then they should get a lot of people to take that poll. Then they should tell me when they have some results.
And if more people called it "Parking Brake" (which is the correct term, by the way), they wouldn't forget to set it when they parked.