Dan you mad man... I thought the Aberdeen track at Union Square was crazy...but offroad in a food hall, bless you!!
I've just recently got one of them iON 1:18th buggys from Maverick and I've driven it hard and it's not broken a thing yet. If you went for the short coarse truck you'd also have the body there to help bounce off damage.
They are 2.4ghz and only £80 rtr. They are Himoto oem of course but are tough. You can get spares quite easy too.
Here is a vid of Jang from URC looking at the Monster truck version...
URC iron track
If you wanna go 1:10 then the ECX Boost is almost indestructible. Check out Jang's thoughts here ..
URC Boost Vid
I think you can get boosts 2.4ghz now.
Also the FTX (Himoto) Edge. It's also very tough according to most reviews and is also only about £90 rtr, once again here is Jang looking at the Redcat version of the Edge
URC Redcat Vid
Hope that helps, I recommend looking at the vids especially the durability tests
...And hope things are good for you over there
Jason.