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Tesla Cybertruck's stiff structure, sharp design raise safety concerns - experts (www.reuters.com)

submitted 11 months ago by L4s to c/technology

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Tesla Cybertruck's stiff structure, sharp design raise safety concerns - experts::The angular design of Tesla's Cybertruck has safety experts concerned that the electric pickup truck's stiff stainless-steel exoskeleton could hurt pedestrians and cyclists.

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[+] [email protected] -7 points 11 months ago (2 children)

Most efficient?

Human bodies are god awful at converting fuel to useful mechanical energy.

[–] hperrin 5 points 11 months ago* (last edited 11 months ago) (2 children)

I’m pretty sure they meant most efficient in terms of emissions, not energy conversion. Even if you count farting as emissions, bikes put out basically no emissions. You’d have to get 100% of your electricity from renewables to match them in an electric car.

[–] [email protected] -1 points 11 months ago (1 children)

Poor energy conversion means more emissions. 🤦‍♂️

[–] hperrin 3 points 11 months ago

Are you honestly going to tell me that you think a person riding a bicycle produces more emissions than a person driving a car?

[–] misophist 3 points 11 months ago (1 children)

I'm sure that would be relevant if my body was attempting to push an entire car to work every day. When I cycle to work, I'm carrying at most 15 kilos of bike and belongings with me. With the efficiency multiplier of gears and wheels, I believe my 8 kilometer trip burns about 200 kilocalories. I don't think that much energy will move an entire 2000 kilo car very far at all, whether it's powered with electricity or petrol.

[–] [email protected] -2 points 11 months ago (1 children)

And how much food does that require you to ingest? What did it take to produce that food, deliver it to you, and take it away when you shat it out?

So easy to ignore all the inbound energy that was utilized for your body to produce 2kc.

[–] misophist 3 points 11 months ago

200 kcals is like 1/10 of the average person's daily intake, so maybe 1/3 of an average meal? Not much at all, comparatively. If you're still concerned about efficiency, slap a small electric motor on the bike, but even a fully human-powered bike is more energy efficient than driving an entire car.