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So maybe we should have bumper cars that only move 25 miles per hour, and never stop except at their destination?

I could actually see that working in big cities.

Let's also reduce the mass of the vehicle, to a fraction of its payload. Then, let's have the user supply the energy from their own food supply. These improvements will also improve health, safety and space/cost/energy efficiency.

https://imgur.com/gallery/DAijq#qcfLWFs

Plastic safety bumper plates around the front seems like a good idea for this build. It might save a dog's life.

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