Short answers, pulled from the story.
Penny Lane is a road in the south Liverpool suburb of Mossley Hill. The area surrounding its junction with Smithdown Road and Allerton Road includes a roundabout at Smithdown Place that served as a major bus terminus.
Production began on the 29th of December 1966 and continued through January 1967. The single was released in the United States on the 13th of February 1967 and in the United Kingdom on the 17th of February 1967.
Trumpeter David Mason performed the instrumental solo which was recorded on the 17th of January 1967. McCartney chose this instrument after seeing Mason play during a BBC television broadcast of Bach's second Brandenburg Concerto.
The record failed to top the chart because only sales of the better-selling side of a double A-side were eligible for ranking purposes. This protocol effectively halved the record's overall sales, leaving it at number two behind Engelbert Humperdinck's Release Me.
Street scenes featuring the band members were filmed in and around Angel Lane in Stratford and Knole Park in Sevenoaks. Footage of Liverpool such as the number 46 bus and the roundabout shelter was also included in the clip.