Be aware that an underpowered or stuck stepper motor can “skip”, causing the position data to be incorrect.

A servo motor has active feedback, so doesn’t have this issue. Servos do have their own drawbacks too, so they are not always a suitable replacement.

If you are worried, a qualified medical practitioner is always more reliable than a web forum.

Insufficient or poor quality sleep can cause problems with attention and memory, and can exacerbate existing conditions.

Poor sleep could be caused by a medical condition (sleep apnoea), or psychological (stress). Often stress can be hard to identify, particularly if it’s long term stress.

Again, this might not be your problem, and finding the right doctor who actually listens to you is important. Don’t be afraid to try more than 1 doctor if the first makes you uncomfortable.

It hasn’t happened to me, but passengers have been severely injured before.

An example of a minor incident.

Listen to the safety briefing. They wouldn’t bother telling you if it wasn’t important.

Keep your seatbelt on for the entire flight. The pilots can’t always predict turbulence, and hitting the ceiling hurts.

Xed

It opens quickly

That would be a great idea, and could even help combat climate change.

Faced a loose Pitbull when walking the streets on my own. It wasn’t until then that I realised a dog is completely capable of killing me and there would be nothing I could do to stop it.

Fortunately, it turned out to be quite friendly, and the owners came looking for it a few minutes later.

It’s about time.

The forum post you were referring to.

Interesting. From Nissan:
“The recommended service interval of the factory-fill coolant is 200 000km (125 000 miles) or 15 years, whichever comes first. Subsequent replacement … should occur every 80 000km (48 000 miles) or 4 years, whichever comes first.”

I guess I’ll put that on my calendar.

It’s a Nissan Leaf, generally known for it’s battery overheating issues.

I also have the refreshed model of the Leaf. It has a higher density battery pack with more tightly spaced cells and still no battery cooling. It will overheat if driven more than 600km (400mi) in one day. When hot, the rapid charging speed drops to about 20kW.

Interesting. I guess my 2011 Nissan Leaf would be an outlier then. It’s lost some range, but I think it will keep working for me for at least another 10 years.

What’s your definition of consumable?

I would have thoughy that recycling almost 100% of a battery into new batteries would be considered renewable.

I’m fairly certain my car doesn’t have a coolant system, but thanks for the reminder. I often forget these sorts of things.

I have not heard of any manufacturer recomending a battery replacement. If you can find any sources I would love to read them.

Historically, electric cars have caught fire much less often than petrol cars (even accounting for the lower number of EV’s on the road). Most of these have been from a single battery manufacturing line and caused by a single misaligned robot that placed the battery terminals too close together. These batteries have all been recalled under warranty.

There are battery types that are better for grid storage than hydrogen. One of the main drawbacks of hydrogen storage is its low round trip efficiency of around 30%.

Redox flow batteries are easily scalable, liquid metal batteries have very low maintenance costs and long lifespans, and sodium ion batteries are much cheaper than lithium ion batteries. It will be interesting to see if any of these options make mass market.

Car batteries last more than 10 years in cars, have a second life as static storage for likely much more than 10 years, and we currently have the ability to recycle over 95% of battery materials into new batteries.

Hydrogen used in fuel cells has a round trip efficiency of around 30% (compared to 90%+ for batteries). If the hydrogen was generated from solar power, we would need 3 times as many solar panels to drive hydrogen cars vs battery cars.

Most (98%+) of all hydrogen is currently made using fossil fuels. The most common method is methane steam reformation. The methane (natural gas) is combined with high pressure, high temperature steam. The methane reacts with the steam to produce hydrogen and carbon dioxide.
The carbon dioxide is usually vented to the atmosphere (some places capture the CO2, and use it to pump oil out of the ground where the CO2 is also released into the atmosphere).
The hydrogen also contains less energy than the methane that was used to make it.

If every car was instantly converted to electric, the grid would struggle but not collapse. There is a lot of extra (but more expensive) production capability on the grid, and EV’s are being added gradually, not instantly.

The grid is currently being upgraded to support air conditioners and heat pumps. EV charging can be scheduled for times when the grid is under less load, so EV’s will have a relatively small impact on the grid.

TL:DR: The grid will be fine.

I’ve worked in IT. You are most likely correct, and anyone with any sense would do it that way, but I would absolutely believe that someone could be incompetent enough to use the computer’s time stamp. I also wouldn’t be surprised if users had access to change the clock.

Large trucks (semi-truck, big-rig, 18-wheeler, etc.) cause around 200,000 times the damage to roads per distance driven than cars.

Even accounting for the lower number of trucks than cars, in Australia trucks cause around 50,000 times more damage to roads per year than cars.
In Australia, commercial trucks pay less fuel excise per litre than cars.