After almost a year of owning my Grom I finally made it out to a kart track with some other Grom owners.
In short, it was so much fun! I can't wait to go back.
My bike is mostly stock and I could definitely find the limits of ground clearance and the suspension rather easily. Those will be two areas I need to fix before I go back.
It was interesting riding such a small track, it was definitely a completely different challenge than riding a full size track with a full size bike.
At first I was rather awkward in the tight stuff, but by the end of the day I had most of the corners down. It definitely helped that were were basically the only people there and had the track to ourselves for just about 8 hours. I was definitely on track a lot more than the two hours I'd spend on track on the big bike.