> the first thing I have them do is find out the county building code engineers[1] and ask them to update the code
Based on your other comments, it doesn't appear you're qualified to be teaching kids about this stuff in the first place, given the lack of understanding about basic electrical code.
The real world is full of tradeoffs. If you also told the kids that mandating 240V outlets in garages would increase the cost of new homes by $1,000 they may have a different opinion on the matter, given that those college kids you're teaching probably imagine themselves trying to buy a home in a few years.
Years ago I owned a home built in the 1980's that had a central vacuum system. It was a cool concept but utterly useless. No new homes that I know of have these systems anymore.
Imagine you were born in the 1960's and thought that these things were the future. Think of all the vacuum bags we'll save from the landfill with this technology! Think of all the money people will save on vacuum cleaners!
> If they want modern features or amenities without spending a fortune rebuilding the house, its best to future proof.
The future is uncertain. Ten years from now people may not even want to own cars if autonomous taxis take off. The whole concept of a garage may morph into something unrecognizable to us today. But if you get your way, we'll waste tons of money putting 240V outlets that never get used as intended.
What is the environmental cost of mining and producing literal tons of copper wire and installing it in new homes for outlets that never get used? What is the cost of using skilled electrician labor to install useless outlets instead of having those same electricians working on building a new solar plant?
I encourage you to discuss these tradeoffs. Don't just ride the good vibes of teaching kids how to use political activism to "make the world a better place", without ever actually teaching them how to evaluate if a certain choice actually makes the world a better place.
If people want a 240V outlet in their garage, they are welcome to pay for it. It doesn't need to be mandated. Home builders aren't stupid: they know what their customers want. If they think they can sell that amenity, they'll install it. If they suspect their customers won't use it, they'll omit it and offer them a lower price. That is the most environmentally optimum solution in the first place. Only those homes that intend to use these outlets should get them.