That is a good one!!

You are right, I didn't see that one comming!
There is (or was) some truth to that! I rember my dad paying for gas at a station with chips he had from a casino in Las Vegas years ago. Also it used to be (but no longer is) any casino would accept chips from any other casino.
Back in the day (as they say) in Las Vegas, Chips were as good as gold (or even money) almost any place in the city.
They also had slot machines between the pumps at the gas stations. Last time I was there, there were slots in the air terminal too!
Rog