I've driven I- 90 through Montana more times than I care to remember, I also remember when Hwy 2 was a gravel road on the way to Helena from Spokane.

@glennlab I was driving from Ft Belknap to Billings one day and doing about 90. I was passed by another car like I was standing still, I was watching for traffic behind me and had no idea this person was even there. That was back when there was no speed limit in the state.

@dalefvictor
You could have gotten a $5 ticket (payable on the spot) for wasting natural resources, later the speed limit was changed to “reasonable and prudent “

@dalefvictor I drove it during the days of Reasonable and Prudent, then the Nixonian 55, I got two tickets for willful waste of a natural resource, 99 in a 55. It wasn't even considered a moving violation.

@Haemish1 The wasting a natural resource thing was much later.

@glennlab
You could have had an open beer in your hand too.

@Haemish1 No that would have been illegal, I was about 16 at the time,

If we had one I might. Dallas is not a very mass transit friendly city.