I tried to watch it, I tried to like it. I gave it 6 episodes, and it failed miserably. The hosts have no chemistry, they have no acting ability to do staged bits, and the show has no budget to do the outrageous things and fantastic photography that the UK version does. It's just a really poor, sad copy and I'm not sure how it's still on the air.
Not all copies of the show are bad. The Australian version of Top Gear is actually really good. I think the secret to the show is to have three outspoken automotive experts that actually sound intelligent, but with clashing personalities. With TG America you have 3 bozos that I wouldn't trust to change my tires much less tell me the finer points of automotive engineering.
The other thing TG UK does that makes it successful is tell the audience what sucks on a new car. The American version can't do that because they may loose their sponsors.
This US version of the show just makes me sad.