Not sure if you guys have ever been to see or indeed participate in these fast Mini Cars.
I first saw them in magazines as a kid, but it wasn't until about 10 years ago I saw - and heard - them in the flesh.
I took the family to a model park for the day. As soon as we got out of the car in the car park, we heard this ,,, sound ,,, quite loud, very loud in fact and almost indescribable but sounded 'fast' - real fast.
After looking about to try to see where this sound was coming from, we saw a big ring of people (about 3 deep) and so we headed on over. By the time we got near, the sound stopped and then when we got in close enough for a look, we could hear a similar noise again, but honestly, we couldn't see anything, just everyone was peering in this ring of noise, then a guy leaned over with a straw broom and the tone changed, eventually we could see a model car on the end of a tether slowing down.
Seriously, I would rate this as a 'must do' at least once in one's life time;-
Tethered Race Cars