In order to act as a penalty for the wrecked driver, add adjustable delay before track call cuts power to track to enable those that didn't wreck a little lead.
#1From @smartrace30.01.2017, 18:05Owner
Though I understand your request, I don't want to make the app more complex at this place. If you would like to have a little delay, it's up to you (as the race admin) to press the button a bit later, right? :-)