The typical car carries 3000 lbs of car and less than 200 lbs of person. Even a fully loaded car with 5 adults is probably 20% payload, 80% vehicle. There's a

The typical car carries 3000 lbs of car and less than 200 lbs of person. Even a fully loaded car with 5 adults is probably 20% payload, 80% vehicle. There's a lot of room for more efficient transportation without qualitative changes in how it's carried out.