A velomobile or a recumbent tadpole is much more comfortable and safer. You can go much faster and/or more relaxed and you can transport more weight to go shopping. It’s the most energy efficient personal transport.

The only insurmountable downside is that upright bicycles are more agile in city traffic, and that a veomobile / tadpole requires more space at home.

But once they are cheaper and more geared for practical use instead of enthusiast speed machines, they have the potential to allow to mostly replace cars. At least if we change how we live and work to a less insane way.