The very end was also exciting... seeing the tweets about the grupetto, were Cavendish was. Here's a sample of the longest 20 seconds, from @inrng:

Tick tock. Riders coming to the finish line know are hors délais. The gruppetto is two hairpin bends from the finish.
59 minutes ago
But the autobus is following a strict timetable, they're close as cloud starts to cover the finish line. 20 seconds to the cut off!
1 hour ago