There is at least some market for it, judging by the amount of money raised by Tangara: https://www.crowdsupply.com/cool-tech-zone/tangara https://www.crowdsupp

There is at least some market for it, judging by the amount of money raised by Tangara: https://www.crowdsupply.com/cool-tech-zone/tangara https://www.crowdsupply.com/cool-tech-zone/tangara