Many of you probably already know about this, but I "found" it this morning for the first time.
Test results of 407 different buses done at Penn state.
http://146.186.225.57/buses (http://146.186.225.57/buses)
WOW! I'm a data nut and this info is a great find. I read the entire report on a single NOVA bus (I like the looks) . Sort of time consuming but If you are about to shell out your hard earned cash on a bus to convert it is a must read first sort of thing.
Even spot reading is worthwhile just as a heads up.
Thanks for the post.