I bought gas with my coinbase card at a truck stop. it put a 150$ hold on my card which triggered a 150$ BTC sale. This happened while the price was dropping a few thousand usd over the course of a few frames. By the time I was done pumping the price had fallen almost 10%. When the total came out to $47 I was then refunded $103 but it ended up being more BTC then i started with.
I bought gas with my dip.