I feel like such a nerd for talking about car tv show!
I used to like the segment comparing a nice version of the car they were doing. Why is it interesting, rare, appealing... it was cool to see a car I wasnt familiar with or a job I didnt know about. I really liked how Edd broke down a task, explained tool/equipment or even a DIY hack that was new to me. I learned stuff and was entertained.
Now, you come back from a commercial and there is a roof rack, or an interior, or the suspension is done. I'm not really interested an most of the cars lately, maybe thats my gripe. But I guess I'm in the minority, its a car show. I should be in the shop working on my stuff, not sitting on the couch.