[Mawr]

A really light car would either have to be limited to a very low speed or be terribly unsafe in case of a crash. Since lightness implies small size, it would also not have other desirable properties of cars, like their ability to carry passengers and cargo.

That said, there might be something to it:

1. The "bicycle that's more like a car" angle: https://www.youtube.com/shorts/H0jtCfdvwH4, https://youtu.be/9B0eXmbrBIo?t=30

2. The "car that's more like a bicycle" angle: https://www.youtube.com/watch?v=B9ly7JjqEb0