[idlehand]

Any car with more than one person in the vehicle should have VIP access. That's at least twice as efficient use of space and natural resources as one person in a 2-ton SUV driving to work or wherever.

[deadmutex]

Case to consider: Taxi, Uber, Lyft, etc? Those have 2 people, but only 1 person is really traveling to the destination most of the time.