How do you Merge Many Feeds into one?

Here is my dilemma…I have about 10 Car Blogs and i want to merge all the feeds into one then make a widgetbox displaying all the articles of the 10 sites…that way I can put the widgebox on the sidebar of each blog and hopefully drive traffic between said blogs.

Ok so I tried Yahoo Tubes but it is not reading some of my feeds? And they are all wordpress blogs so I dont know whats up with that!

Then I merged all of them together using FeedMingle but that does not display the images?

So whats my next step. I want a widgetbox like on the sidebar of this site: (with pictures) but I want all my feeds in one.