I think it’s a game of diminishing returns.
Let’s say 6 minutes gives you perfect 100% cleaning.
Well 30 seconds probably already gets you 50% or more of the total benefit just by getting fluoride on your teeth and rinsing your mouth a bit so getting people to 3 minutes is probably approaching perfection anyway and if you start asking people to do 6 minutes then they’ll say fuck it I won’t bother at all so settle for the 80% win.
I assume.
Not really. At all. Like they’re barely even a bandaid.
The issue is a car weighs a couple of tons and it’s being used to move a person who weighs around 100kg.
It’s massively inefficient use of energy.
Even in some fantasy world where the energy used to charge the batteries is all renewable - not even close to reality but let’s pretend - all that lithium and other precious earths are still an environmental disaster.
The answer is mass transit and lower mass vehicles. A lifestyle change is actually required and the thing is it wouldn’t even make people less happy, just that change is so fucking scary for some reason.
Walkable cities are a dream lifestyle and an electric scooter in a walkable city is outstanding. Fuck urban sprawl.