Misc: Speaker's Corner is a feature of which London park?

Questions

The first parking meter was installed in Oklahoma City, Oklahoma, in?

The first video game was _____, introduced in 1972 by Noel Bushnell, who then created Atari?

The highest man-made temperature - _____ million degrees Celsius - was generated at Princeton University in a fusion power experiment in 1978?

The last 12-cylinder car produced in the United States was the 1948 __________?

Gold salts are sometimes injected into the muscles to relieve?