re: 60 MPH...achieveable? Who cares?!? Let blueprint an engine!
It would seem to me that, as with most threads, if someone has a pic that relates to the thread at hand in a direct manner, then it would be o.k. To just post a pic with one line that doesn't explain anything or even seem to be related to the thread is only contributing to ones post count, instead of contributing to the thread so to speak.
"I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it." - Thomas Jefferson