Anyone have any experience with these? On the market for a vehicle for the wife and focused mainly on Tahoe/Sub/Yukon and saw one of these on a lot today that seemed like a pretty good deal. We could care less about the green benefits of the hybrid model, this one just happened to be well featured and appeared in great condition (lot closed so limited to just looking at exterior and in windows today) without too awful many miles on it (about 116k). So just wanting to see if these have a decent track record or if there are known issues with them, especially with the vast amount of electronics and the additional special batteries that I am sure would cost a small fortune to replace if there was a problem.