I got a huge powered "toothbrush" to wash my car. Of course it's not a toothbrush, but a powered Sponge roller, eRoller. It's powerful and works great, less than 2 lbs. The whole body is aluminum alloy made and soft covered.
Here is the video I was using it to wash the car at a self-service car wash in Miami. I hope there were buckets for fresh water and shampoo, that would be better for washing with this big "toothbrush".
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