Try to give some examples, this is the only way people remember advices.
The car is the mean to move. Don't move to drive, drive to move. The important is to move, not the speed at which you move. Speed kills your money first, and with an accident your time travel, innocent people, your friends and family and least : you. Safety is more important than your time, so don't try to recover on the road the time you lost.
Leaving early is the more difficult technique I use... I never liked waking up soon

but it does permit to avoid so much traffic that I do it.
Anticipation is the key to safety, courtesy and saving, so they have to work hard on that and never stop to try improving.
In France motorcycle are thanking you when you move to permit them to pass you. When a motorcycle is thanking me then I badly did things as he saw that I moved. If I correctly anticipate him then I would have moved when the motorcycle is 3 cars behind me and so doesn't look at me yet.
In the front of you, you know what the 3 cars are going to do before they realize they will have to do so. Per example you see a distant light becoming red then you put in neutral before the 3 cars in front of you see the red light.
Don't idle more than 10 seconds (was it in light timing ?)
Start the engine when you are ready to go. Don't idle the engine to warm it. Drive immediately, only drive smoothly first. In cold weather drive with gloves and a polar vest.
If you have them, then use :
- your speed limiter (a special mode of some cruise control) or speed advertiser (got one on my gps), also good to avoid tickets. Did I talk about safety to you already ?
- your instant fuel consumption display. You can turn it into a game : reset it each morning and try to beat your scores
Clean the car from wasted weight (golf clubs...) and wasted aero (roof rack...)
Do maintenance on due time, and more : fresh air filters, thinner oil (5w30 instead of 10w40 per ex), verify brakes don't drag, verify tires are aligned...
Show a little calculation about the saving (12.5gal tank @4$/gal you saved 10$each when having mpg up by 25%) and a investment into a Scangauge (16 tanks ie 8 months or fewer).
It's cheaper to keep its old car and apply ecodriving than to change for a brand new car without change its habits : is anybody here knows someone with better fuel economy than what we are doing with our old cars ?

You can also reinvest in fresh air filters, thinner oil, brakes & tires verifications... but also wipers, LRR tires, tire pressure gauge, air compressor (if you have to pay for in your region)... Did I talk about safety to you already ?
Offer the car a pretty scarf, aka upper grill block, by cold weather : a piece of chloroplast (recycled from a boring political ad), some gorilla tape and a painting spray.
The most important, be proud to apply what you are told to do (ecodriving, recycling - for the piece of chloroplast ad) since so long but nobody is doing because they do prefer driving with their p***s (better say "with testosterone") than with their brain. Did I talk about safety to you already ?
Now daily commutes are relaxing moments, not stressing ones

concentrating on driving permits to forget about other problems. So install comfortably behind the wheel, choose a calm music (don't set it loud) and have fun.
Sorry, certainly much more info than you needed

In a interactive radio show you can have all that noted on a piece of paper and check when you have talked about a topic, and prepare as much examples as possible.
Have fun,
Denis.
PS Did I talk about safety to you already ?