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WRONG!!!!!! If the chains are fit correctly you don't need bungees. Cut a few links off and fit the chains to your tires. I've used chains on full sized trucks and on down to garden tractors. It's always best to fit the chains. The chain manufacturers don't always make an exact fit for a certain size tire. If you have a sloppy chain fit and the bungee breaks the can can come off and get stuck someplace and do bad things.
So a transistor is a switch and I have a switch on the wall to turn the lights in my house on and off. My wall switch is a computer??