3 ms·

for city driving, electric vehicles are crazy efficient. the energy is negligble. basically all the driverless cars are EVs.

viraptor 3y ago
That's an interesting claim, but have you got numbers to back it up, compared to bus networks which are also largely electric/hydrogen in most recent deployments?
- alooPotato 3y ago
  Google says it costs roughly 4 cents a mile to charge a tesla model 3. Most city rides are a couple of miles so its a really really small fraction of the cost of trip cost (even if you price at public transit prices)
  - palata 3y ago
    Can we talk about energy, and not price? And compare the consumption of a Tesla Model 3 with the average number of passengers (< 1.5?) versus the consumption of electric public transit?
    - alooPotato 3y ago
      Why? You can convert energy to cost and back - its all the same energy source for EVs vs public transit. Ultimately cost is what matters anyways. Who cares if the energy requirement of public transit vs an EV has a huge delta (spoiler: there isn't a huge delta in terms of energy per passenger mile). They are both super low and efficient.
      - palata 3y ago
        > Ultimately cost is what matters anyways. To you, now. But the biggest problem of humankind right now is energy. Consequences of our use of energy are climate change and biodiversity loss. But even ignoring those consequences, we are going into a world where we will have dramatically less energy. Not in 100 years, in the next few decades. So you will live in that world.
palata 3y ago
You do realize that the energy needed to move an object (say a car an its passenger) is related to the mass of the said object, right? > the energy is negligble What does that even mean?
- alooPotato 3y ago
  yes i understand that. i mean its negligible in terms of cost relative to the cost of a trip (like a public transit fare).
  - palata 3y ago
    Right. From my point of view, you answered to my comment about energy by saying "it's negligible", but you apparently meant "it's negligible in a metric different than the one of the post I am answering to, but I won't mention it". I think that's why I got confused :-).

viraptor 3y ago

That's an interesting claim, but have you got numbers to back it up, compared to bus networks which are also largely electric/hydrogen in most recent deployments?

alooPotato 3y ago
Google says it costs roughly 4 cents a mile to charge a tesla model 3. Most city rides are a couple of miles so its a really really small fraction of the cost of trip cost (even if you price at public transit prices)
- palata 3y ago
  Can we talk about energy, and not price? And compare the consumption of a Tesla Model 3 with the average number of passengers (< 1.5?) versus the consumption of electric public transit?
  - alooPotato 3y ago
    Why? You can convert energy to cost and back - its all the same energy source for EVs vs public transit. Ultimately cost is what matters anyways. Who cares if the energy requirement of public transit vs an EV has a huge delta (spoiler: there isn't a huge delta in terms of energy per passenger mile). They are both super low and efficient.
    - palata 3y ago
      > Ultimately cost is what matters anyways. To you, now. But the biggest problem of humankind right now is energy. Consequences of our use of energy are climate change and biodiversity loss. But even ignoring those consequences, we are going into a world where we will have dramatically less energy. Not in 100 years, in the next few decades. So you will live in that world.

palata 3y ago

You do realize that the energy needed to move an object (say a car an its passenger) is related to the mass of the said object, right? > the energy is negligble What does that even mean?

alooPotato 3y ago
yes i understand that. i mean its negligible in terms of cost relative to the cost of a trip (like a public transit fare).
- palata 3y ago
  Right. From my point of view, you answered to my comment about energy by saying "it's negligible", but you apparently meant "it's negligible in a metric different than the one of the post I am answering to, but I won't mention it". I think that's why I got confused :-).