wellll I wouldn't say B17A was the fastest.
And no it's not all highway at all, in fact quite the opposite. It's mostly just my commute to work, which is mostly 2-lane roads with several stop signs, but only 2 traffic signals in about 14 miles. So it's not stop-and-go traffic either. And yes I do romp on it in the VTEC range from time to time.
Since the 1st of January I've driven about 5,000 miles, and only 3 fillups out of 24 have averaged below 30 mpg. I want a 4-door TSX 6-speed badly, but I'll probably never get rid of this car, just because it's so darned reliable and efficient.