It matters not which is the greater of 2 evils. But to help you, doing 138 on an empty motorway isn't as 'safe' as you are trying to get people to admit to. The armco wont hold the bits of you on your side of the motorway. So unless you can guarantee the other side is empty too, which with you doing 138, and the cars coming the other way at 75 ish, makes it a very big gamble. Of course your bits crossing onto the other side combined with the forward speed of cars going the other equals a great deal of kinetic energy, none of which I want to be on the reception end of.
Of course it would be unlike you to think that through wouldn't it?
Soto be pedantic as well, OK, so you loose it and end up meeting your maker on a empty motorway and kill yourself. Is that going to harm others? Well, try picking up the bits of a fatal. What about the people you inconvenience while the mess you make is cleared up. The cost,? Oh didn't think that one through either did you, 3 years ago, they were quoting the cost of a fatal at £1million, I'd rather my taxes went on something worthwhile, not to pay for you trying to prove you are an idiot, you don't need to do that by driving at 138, you prove that conclusively so often already.