On This Day: 05 February 1974 Maximum speed on ---------- reduced to 100 kph ?

Questions

This group's name comes from a term used for a 1911 firetruck?

This group's name was inspired by reports of Sinatras move to the film industry?

This group's name was inspired by the hit "Strawberry Fields Forever"?

Painter of most of Joni Mitchell's album covers?

(After live aid)?