There is no such thing as a magical bag that deploys to catch broken parts under the car! lol This thread is just crazy.
Are far as the driveshaft exploding, I am sure that is an exaggeration at best. Some later model E9x cars have a recall for the front driveshaft bolts coming loose. But being you are in California, I doubt that your car is Xdrive and that wouldnt apply to your vehicle.
2013 Alpine White F10 535i. JB4 S2, Quad Tip Magnaflow Exhaust, H&R Springs
2011 335ix Le Mans Blue w/ M Sport SOLD
2003 Turbo Cobra 765rwhp/650rwtq 9.77@126 pump gas, lifting @ the 1000ft mark