How many here have done the "Speed awareness course"
I have, I was clocked doing 35 in a 30 at 07:10 on a weekday morning leaving town...
But there is a lot to be said about speed limits, reasons for speed limits and the cause of all motor vehicle collisions is caused by speed, not some, ALL.
If you increase the speed from 70 to 80 mph the increased usage of fuel is approximately 25%, the wear and tear on your vehicles internal workings increases as does the wear on your brake pads...
At 30mph if you bring your car to a halt between two points and put a cone in front of the end position then go and do exactly the same but drive at 35mph, when you hit the cone you will be travelling at about 27mph...instead of 0mph.
So, doing 60mph will probably save you a lot of money on fuel and wear and tear on your car, it will cause less damage to you personally should you hit the car in front of you, and strangely enough you could well get to your final destination quicker and more relaxed.
Also don't forget that should you get a conviction for speeding it is 3 penalty points to start with, plus it will add a good (and possibly at least) £100 to your insurance premiums for the next three years, and it must be disclosed to the insurance company for up to five years, it is also a requirement on some application forms to disclose the fact you have a conviction for speeding, IE a shotgun certificate requires you to disclose you have a conviction for speeding... It may or may not have an impact on whatever you are applying for, is it a worthwhile risk?
So, what are the positives and the negatives again...