passengers

More drivers mean shorter wait times, more passengers means more work for drivers.

Private pilots can bring passengers in their planes much like private drivers can bring people in their cars.

The A380 also gets cost savings from sharing the landing fees, taxes and slot costs between more passengers.

Surviving passengers liable with driver for their role in in convincing driver to drive like an idiot.

Just as important, the regulators wouldn't let you run passengers using crew that hadn't been trained on that line.

It creates a culture in the cockpit where deference to rank is more important than the safety of the passengers.

Driver and two passengers wearing seat belts survive, one passenger not wearing seat belt killed.

Lyft Line involves multiple passengers who do not know each other before the ride.

All vehicles involved in an imminent accident acting in the self interest of their passengers is likely to be the optimal solutions.

I'm also not convinced that the risk of passengers being sued in an Uber-type situation is more than negligible.

For example by setting fixed prices so drivers earn more money and Uber making less profit (higher losses;-) (and/or passengers paying higher prices).

Liquidity is the number of drivers available and passengers requesting a ride.

Uber "disrupted taxis" by disregarding the law, removing protections for both passengers and operators, and shifting risk on to operators while shifting profit margins to management.

The only way "electric planes" would be faster than turbojets — let alone ramjets or rocket engines — is for the plane itself to be a ballistic component launched by a gigantic railgun, and then — assuming you manage to build the thing in the first place — your passengers are literally paste on takeoff as they eat a few hundred Gs.

Passengers on a private plane cannot be the sole reason a flight is happening in the first place.