Brake Drum Wheel Cylinder problems of the 2007 Nissan Maxima

I experienced a complete brake failure resulting from failure of the master brake cylinder on my 2007 Nissan Maxima with only 48,000 miles. Fortunately, the failure occurred while backing out of the service bay at kal tire located in ladner bc, canada. It was necessary to employ the parking brake to stop the vehicle. Because I reside in point roberts wa, I could not take the risk of driving 45 miles to the nearest Nissan dealer located in bellingham wa. Ladner is only 5 or 6 miles from point roberts wa. Had I ran the Maxima down I-5 down to bellingham wa, this complete brake failure would have been lethal when driving at stated expressway speed limits of 70 mph. The failure of a master brake valve at 48,000 miles is unprecedented in my 50 years of driving experience. I have requested the valve be held for analysis and I will be happy to mail it to you for your perusal should you wish to diagnose it. This valve not covered under the 36,000 mile warranty, per the Nissan dealer located in bellingham wa. I conclude this communication by expressing my concerns regarding the relative safety of this master brake cylinder. It is not unreasonable to state lives are at stake in this matter.