Full-size cars, yes, but I wish we the people now stopped the fossil-lobbied lawfare against microcars.

Renault Twizy, top speed 80km/h

Kyburz Plus, top speed 30km/h

• Gross weight ~10% of a typical electric car, so probably ~10% tyre dust too.
• For bikeways. If the plastic surface were designed to yield in a crash, a pedestrian could be safer hit by this than by a bare biker on a bare metal bike.
• Takes less space than a biker because a 4-wheeler can be steered more accurately than a naturally unstable bike needing wobble margins.
• Banned in many places through lawfare: https://xfwnofqagsnmdxuf.quora.com/Lawfare-against-tiny-cars-velomobiles