Gave it a 9. It's not a big Adventure like the Christmas Specials of James, Jeremy and Hammond BUT for a normal episode, it is awesome. I really think the chemistry between the three is growing, and, much more importantly, they are developing ideas which are different from the original show. The Mustang bit is one of my favourite things from ALL of Top Gear, included UK, and the overall episode really summed up TG USA for me. Yes, they had a pretty poor start (except Alaska and Moonshine in the first series), but there is something going on, it's developing. It's great to have a real race driver as a presenter, I love Adams silly ideas, and i, contrary to others, also think that Rutledges "deep-south-naive" thing is getting somewhere, this guy has self-irony.
What to say about the series? Well, the thing with the tractors wasn't that great, small cars and police cars also weren't a diamond, but the other three episodes were pretty good, the last was brilliant. All over all, and i never thought i would say this one time: There have been series of Top Gear UK which the guys have outdone with this one. Thank you for rescuing me from a summer without Top Gear!