Powell, sounds like you're getting some good use of yours too. I now have over 15,000 miles on my Big Dummy. I bought it in November 2010 and now have more miles on it than the motorcycle I bought in 2003.
My batteries are doing great. I bought a second one from Paul that I strap on when I'm covering a lot of ground. I have a 37 miles loop that I have to do from time to time and I've found that with the two batteries I can't run it hard enough to run them both down. I try to keep the speed within reason and I always pedal.
I do a local road race every year, it's 27 miles and hilly. I don't do it to win or beat anyone, just the satisfaction of completing it. Race day was only my fourth ride on the road bike for the year. I wasn't sure how I would do, since everyone knows you don't get any exercise on an E bike. I did fine, I was quite happy with it actually. My time was about 1 hour 44 minutes and I made all the hills with no real struggles.