Tragic accident should never have happened. After building off road and sand cars for years there is definately a correct way to brace a frame for just this type of unfortunate event. Never would we throw someone under the bus because of a chassis design, home made or by a professional builder. However our years of experience have taught us what to do and what not to do. You can build what you might consider a bulletproof chassis and still something like this can happen no matter how much tubing or how many gussets you install. We have been retrofitting sand cars for quite some time to reduce the chance of just an incident like this. Make sure your cage and roof top are x braced to lessen the chance of a a lateral collapse and although most people dont like a lid on the car this is something that can change your car from a plow to a ski. Simple changes can save a life or prevent serious injury. Other times nothing can help depending on the type of driver experience, weather conditions or just plain stupidity by others. Once again our condolences go out to the families during this difficult time.