Nice Work

Fair enough.

That looks pretty clean and well finished, but I cant help noticing that there is a lack of bracing between the upper & lower decks in the rear of the truck- might lead to some chassis flex if you start doing jumps or serious offroading.

No chassis flex here
 

Sorry I do not understand what you mean by a lack of bracing
body is super stiff, and although I have not jumped really high with the car
I do not think there is anything that will bend or surrender
I've probably been on the streets and in the field, a 10 - 15 times now
and nothing is broken until now :mdr:

I think what Neil means, is the lack of support between the chassis and the upper plate for the esc. (In danish: manglende støtte mellem bunden og esc pladen).

What type of alu is used?