As EcoMotoringNews.com reports, some creative Tesla owners came up with a way to make a few bucks from their parked EVs: Cryptocurrency mining.

This raises questions that shouldn't just be aimed at bitcoin mining, or even electric vehicles.

For those unfamiliar, cryptocurrencies only work because there is a network of distributed computing that processes the transactions. To reward those offering the computing power, cryptocurrencies give fractions of new bitcoins to those who did the work of running the network. This is referred to as "mining" bitcoins and other cryptocurrencies. This was an expensive and power-hungry task that could wear out computer components much faster than usual.

Initially, many doing this used high-end graphics processing units, but as the money earned per device diminished, miners turned to specialized computer units, called ASICs, to do the task faster with less electricity. But the units are still not free and they still can use kilowatts of electricity for a handful of them.