But let me tell you: never mind the show's premise that they weren't travelling fast enough to meet the 8-day deadline to reach the finishing line at Halong Bay. The real reason they took a train from Hue to Hanoi is because there is nothing very interesting between Hue and Hanoi. I should know, I'm writing an entire chapter on that region.
I'm not a huge fan of Top Gear like, say, G-man, but this was a good episode. Also a great PR exercise for Vietnam. I fully imagine that legions of fans are going to show up in Halong Bay looking for Ba Hang Bar and in Hoi An to make zoot suits.