Ok I see your rubber line at the fill neck. That line won't help if you get tee boned, it's in the vertical line.
I was more concerened with having the rigid horizontal pipe being pushed straight in shearing the connection at the floor. If you get hit it will be down low on the side of the cab. If it were me I'd think about making most of the line inside the cab rubber. Connect it at the filler neck and at the 90 at the floor. That way if the cab gets pushed in the rubber line just buckles/folds and doesn't come apart.
Mike B
