Does anybody know if they make an external mounted speedometer for Nitro trucks. I saw at my LHS that they make a speedometer that you can mount in on-road cars and it tells you the fastest you can get up to and stores it in a memory... I am looking for one that can be mounted on my remote and transmits my speed. Just curious, I looked at Tower and couldn't find anything... You know like in Back To The Future, Doc has one mounted on his remote to tell him when the Delorean reaches 85 mph... I realize that its movie magic but it should be available by now with the advancements in R/C...