If straps store that much energy why don't we use short winch lines instead?
20' of synth line with an eye on each end would be pretty easy to store.
Performing any type of kinetic pull on a synthetic winchline will cause it to break.
The reason that any of Master-Pull's synthetic ropes, or anyone's for that matter, fall to the ground when they break is because they store no energy. This means that they do not stretch at all, and when they are used in any sort of jerking action it causes them to snap.
Remember that beyond the tow straps there are also tow ropes, which have been proven very useful by military special forces and off-roaders alike. Our Super Yanker tow ropes can stretch up to 30% when they are properly used which greatly aids in vehicle recovery and reduces and can actually remove all of those violent jerking actions that are usually associated with yanking on a stuck vehicle.
HTH
-Alex