It's his thing,
at the end of the first segment
WHY IS EVANS SHOUTING???????
I have just watched Extra Gear and it was meh, it was slightly better than the studio segments on the show.
The problem with Evans was shown in an instant when asked about the Viper, if he would buy one and he said "no it's not my type of car" there was no pluses or minuses no reasoning in his answer, the only times I have ever heard Evans talking in an interesting way about cars is when he is talking about Ferrari, yes Evans has a few cars and has a wide range over the years, that makes him a car-guy sort of in the same way that Jay Leno is a car-guy but when asked to do the original USA Top Gear Jay said no it will not work and that's the issue here, Evans was good in his younger days on the Big Breakfast and wasn't to bad on Radio One and then TFI, but that was back in the day, when he left and came back to the BBC for Radio 2 he said that he had changed as he had got older and mellowed and that is the problem, Evans may have worked on Top Gear back then but not now.
Chris Harris on Extra Gear when doing the news was basically Jezza, May and Hammond rolled into one, he is the only one that knows what he is doing on the show, the BBC should do imo is just give Chris Harris funds to do his own thing like he did on YouTube and leave it at that.