Heard from a member of Mendip club last night that they are about to start building an off road track next to the car park at their well known nitro on-road track just outside W-S-M
Plans as far as I know are for it to be 10th sized

and astro turf was mentioned
Hopefully one of their members will get on here with some more concrete information ....
If I find out more, you guys will be the first to know