the tool 6 is connected interactively preferably with a bent over region of a tab and the tool 6 at least during the detaching of the stop element 5 from the first of the structural parts 2 is supported preferably is secured by means of the recurvature 11 on the other of the structural parts 3 in this embodiment depicted in fig1 in the event of a crash is specifically provided that the flex tab 8 is in contact with its recurvature 11 on a corresponding chassis stationary stop 40 of structural part 3 such that the flex tab 8 during the sliding due to a crash into the structural part 2 is reformed in the recurvature 11 and thereby is pushed with its end bearing the tool 6 in the direction of the steering wheel 33 it is in turn achieved thereby that the tool 6 is introduced or slid between the first structural part 2 or its outer surface 12 and the stop element 5 in order to pry out and or shear off the latter with its peg 28 from the opening 30 primarily to be noted in this embodiment is that through the staying of the recurvature 11 of the flex tab 8 on the structural part 3 or its stop 40 a transmission function results thus the tool 6 is pushed twice as far in the direction of the steering wheel 33 as the structural part 2 is pushed during the sliding into the structural part 3 into the opposite direction the stop element 5 is hereby detached by means of tool 6.