Interesting video on the history of the BMW roadster. Almost completely ignores the E85, which is a little strange given the sales volumes & the obvious fan-base. However, the rest is interesting and there's some lovely German steelwork on show 
https://youtu.be/apqDx0o6ZgA?list=PL0a16lfLrWtyrN7od82afZMMp4b3Oe1Ug
https://youtu.be/apqDx0o6ZgA?list=PL0a16lfLrWtyrN7od82afZMMp4b3Oe1Ug