Yes, I understand it, you don't. I've just given you several examples of how my picture and others like Lynce's are related to Top Gear, they show the battles between closely matched cars, Lynce even spelled it out for you on his picture.
As for lukasauno's picture I can see how it's related to Top Gear. The yellow LX6 could be the time they tried to break the world record for 0-60 time using a modified caterham, or it could be one of the other times they put a caterham to the test on their track. There was an episode based on drifting too, the one where they got a D1 champion to drift a Vauxhall Monaro. There is a picture of drag racing in there too, which is something they constantly do to test out cars. Last but not least the one in the bottom right could be the Porsche challenge where they had to spend £1500 on a Porsche.
shaun463 I'm not so sure what episode that is related to, but it could just be a reference to one of the many challenges where the 3 of them end up messing about in cars and cocking things up for each other. So it's related to a theme in Top Gear.
Hopefully that clears it up, if by some miracle I actually win this time, I have picked a theme that will be so simple even you will understand it.