Renting a Toyota Camry is also cheaper than hiring a tour bus with driver

True but in most cases you'd be better off hopping in the car and booking it down the freeway to wherever you're going. Way cheaper and more reliable and honestly maybe faster depending on how far the airport is and how safe your pre-flight is.

The price of the jet includes the cost of 2 crew to operate it and the organization around it to arrange everything for dispatch. The Cessna price listed here is for only the plane and fuel.

Makes sense. A bicycle is probably a 20th of the price of a limo to rent.

A private jet comes with a crew and a pilot. This is a plane you have to fly yourself.

You can often find a flight instructor willing to build hours at rates as low as $15/hr.

Although many can't officially take your money as that would he operating a commercial passenger service which is regulated differently.

You just get a lesson!

A private jet is a jet, where a Cessna 172 is a small unpressurised prop plane that dawdles along at 1/3 the speed and is uncomfortable to be a passenger in…

It's speed is also lower than many cars on the Autobahn at ~300 km/h

Granted, there's less of a risk of traffic in the sky than on the Autobahn

„many cars on the Autobahn“? Not really, i very rarely see cars going 300 km/h.

Even 200 km/h is exceedingly rare.

Going 160 knots (300 kph) in a C172 would be pretty rare and is nearly at the maximum speed of the airframe. Cruise is more like 115 knots or 210 kph.

a Cessna engine costs maybe $30,000 to overhaul (every 1800 hours or so)

a Gulstream G650 engine costs maybe $4,500,000 to overhaul every 10,000 hours. Times 2.

a Cessna 172 sips about 8 gallons per hour.

A G650 guzzles about 500 gallons of fuel per hour

jet fuel is a little cheaper than avgas though

Weird humblebrag