I noticed that the car driving down the road at the end of if the world doesn't end is actually the same car from here comes the sun - is this just a meaningless but neat detail, or does it mean something more in the context of both songs together?
yes. the 'somewhere' scene was made first, and then when i was making the video for 'here comes the sun', i wanted a car so i used the car i had on hand. then, years later, when making the "if the world doesn't end" video, i needed a scene (well, many scenes actually), so in many cases i used scenes i had on hand (such as the 'somewhere' scene)