Yes, that's the same thing that I see here. A government agency accepting bitcoin is a good news for the community as it increases the adaptability as well as the visibility of bitcoin in the socio-economic perspective, but citing the transaction fees and the time for confirmation make this decision impractical. While many people consider bitcoin as an investment asset, I doubt any people will be actually using bitcoin for making the payment for penalty. They would invest the money instead.
You pay the fine with bitcoin. You have 'lost' those bitcoins. Let's say you don't buy it back in a short period of time. Some months later, you notice that bitcoin price has multiplied by 1,5 (or 2x). It's not the best purpose for spending bitcoins for traffic fines. If you buy a house or something that's really an investment, it is much more practical spending.
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