For at least one of the most toxic additives in tires, Washington State's Department of Ecology and some West Coast tribes are leading the push to prohibit, with the caveat that researchers are still looking for a suitable replacement:
This is particularly noticable along the Pony Express Trail in the desolate areas of the west. Everywhere there is water there is a big patch of currants or chokecherries
More recent but one can see lots of daffodils around old homestead sites in various places in the Willamette Valley. Also old apple trees in the middle of nowhere .
Much of the Pacific Northwest (coast, including lake coast) is extremely rocky with scant amounts of sand. Much of it, heavily wooded, even today. A number of invasive species (like the Himalayan Blackberry) have muddled sites, that would have been obvious, based solely on plant sign.
So therefore, an electric car with just the driver is more efficient energy-wise than an airplane, while an average airplane is better than a gas car with even three people in it.
You already started along the road to normalisation by using MJ/L but you might as well go the whole way and consider absolute cost per person per mile... or person miles per absolute unit cost if you prefer. Those might be more telling figures.
For instance many EV proponents note the total cost of ownership difference due to significant differences in maintenance costs. Playing the other side of the argument: they tend to forget about the value of upfront cost is more than later cost.
It's still possible to achieve some sort of quantitative comparison by applying an interest rate based on "distance" of the cost in time before summing them. If you applied this to a regular petrol car you might be able to make a better comparison to the ticket price of a flight.
Dunno, a modern UK car will get 60mpg on motorway travel (that's what I've had), or even more. that's 50miles per us gallon. 2 passengers means 747 fully loaded efficiency, 3 wipes the floor.
Of course a 747 in a domestic Japan configuration will have more passengers than a typical BA 747 tatl flight with 100+ beds.
I could potentially see technology like this being useful even for people without vision issues. The ability to read information from a display without needing to glance down at the watch would be great.
There are apps out there for phones and smartwatches that will vibrate text messages in Morse code. With any sort of determined study someone can pick up basic (~5 WPM) Morse code in about a week.
Unfortunately the best way to increase speed with Morse code is to learn to recognize entire letters as one object and not count "dots" and "dashes", which is much easier with sound over flashing lights or vibrations.
In SFO most recently, I was welcomed back only after I thanked the guy at passport control and told him to have a good day. It really depends on how passport control feels that day.
https://ecology.wa.gov/blog/january-2023/saving-washington-s...
https://apnews.com/article/epa-tires-toxic-chemical-salmon-t...