Just don’t speed.
I did the math once. In mos of your daily trips you will never go more than a half hour. Even in a half hour trip you stop and go.
So driving like a maniac your AVERAGE speed rarely increases by few MPH.
Even in the BEST CASE where you have a straight shot with no stops, you can only increase your speed by enough to ride safely in traffic.
So... in the best possible case, you drive 60 MPH instead of 40 for a straight line of 20 miles.
When you drive at 40 you get there in a half hour. If you drive 60 you get there in 20 minutes. In the absolute best possible case you only save 10 minutes.
And every short drive scenario plays out worse than that.
With stops ans starts and turns and everything you rarely save more than 5 minutes.
Just leave 5 minutes earlier for everything and you save gas, don’t cause traffic problems, don’t get a ticket EVER and don’t risk your life.
The same logic applied to long trips would have you doing 10 or 20 mph over the limit.
Drive from El Paso to Texarkana averaging 80 miles an hour, and it will take you just over 10 hours. Drive it at your 40 miles an hour, and it will take over 20 hours. And you will be so tired after 20 hours of driving, you’ll probably have a wreck.