I think the two segments illustrated what I thought TG got right over it's run and what it got wrong.
The bits with the three of them doing things that you (the viewer) could imagine possibly doing yourself were the best - the trip to the Millau viaduct, the 612 vs. train to the Alps, the crap car challenges etc. The classic car segment last night fitted into this category.
The bits that got tedious were the over-edited and over-blown car football matches, caravan conkers and airport vehicle races. The 4x4 segment was closer to these.
All in all, TG had definitely gone off the boil for the past few series but still provided the most entertaining car-related viewing over the past 12 years.