The cars are lined up, towards the top of the hill and then take off through the course, sometimes one right behind the other, slide/spin their way through and then exit between the green pylons at the end.
Sunday evening while eating my dinner at a cafe in Plymouth, the table next to mine was occupied by 3 young men and it didn't take me very long to overhear them speaking of their busy day on "the track". After listening for a bit, I interrupted them and asked some questions, curious about the how and where (why was broached as well). I learned that they weren't really a club, that they rented go-cart tracks where they could for prices the group could afford. I don't ever remember feeling more Grandfather-ish but it was fun, they answered all of my questions and seemed to be happy to share their fun with an old geezer. I DID find myself guessing that they all must have much higher paying jobs than I have.
It's obvious some of these cars are quite stock, while others had been heavily modified. I asked if they rode to the event on the same rubber they rode home with....."We bring spares, sometimes not enough of them".