drivetrain

If the car manufacturers built the drivetrain to last 400,000 miles, they would just be wasting money.

Considering the wasted space in the buses structure and replacement of the engine/drivetrain it certainly looks like a good option.

Especially failures to the drivetrain, suspension, steering, or braking system.

You could remove the whole drivetrain and stick electric motors directly to the wheels and you would have a better car than the best combustion engine car.

By the time they get to 300,000 km even if they aren't rusty they are usually 20 years old and things like drivetrain start to go and the vehicle is not worth the cost to keep up the required maintenance.

I was under the impression that as long as you kept the power output under about 300 wheel horsepower that the entire drivetrain is pretty reliable.

A development review meeting tends include various mechanical departments, like Drivetrain or Engine or Chassis, many times they bring physical prototypes to the meeting and the problems and proposed solutions are comprehensible.

Team Sky have invested heavily in technology, which includes many significant improvements to tyre rolling resistance and drivetrain losses - someone riding Froome's Pinarello would need about 30w less power to equal the performances of the 1990s.

Some kits from EVWest [0] even retains the transmission and the rest of the drivetrain, only replacing the internal combustion engine with an electric motor and supporting devices (chargers and coolers), and a place to put the battery in.

To add to the already comprehensive list of reasons you gave for tram superiority - due to the electrical drivetrain and bogey system that all rail-based vehicles implement, there is generally more usable room for passengers inside the vehicle, as well as a much quieter environment due to the lack of engine noise.

Even though the "fuel" product and drivetrain are different, gas stations can adapt for hydrogen.

Certified pre-owned is a fancy way of saying "used, with a 7 year drivetrain warranty from the manufacturer", which is a lot different than "used and those broken things are your problem now".

I imagine there are many, many auto manufacturing VP's who think, "I don't know anything about engines and drivetrains and all that technical stuff [– and I don't need to]." Why should the VP of Human Resources need to know how a drivetrain works?