How is that misleading? A commute typically has one source and one destination. Some folks in Redwood City are going to Belmont. Some folks in Belmont are going to Palo Alto. It seems to me his model scales just fine. Unless you&#x27;re proposing that the driver drop her passenger at a different location than she is traveling to. But this increases the commute time by a fair bit, which makes ride sharing less attractive. In particular, you start losing any time you gained by being able to use a high-occupancy vehicle lane.<p>If everyone spontaneously agreed to ride-share, the traffic on the roadways would go down, commute times would go down, vehicle miles would go down, all kinds of great things would happen. But this proposal suffers from a game theory issue.