Obviously it’s all going to be dependent on local laws, and depending on their vagueness the attitude of the cop that eventually has to deal with you. Here we have a catch-all ticket for “wasting finite resources” for cops to use when they don’t know what else to ticket you for. Originally it was to stop cruising, but I’m pretty sure no one has gone cruising since gas was $0.25 a gallon. Also I’m wondering if I could fight such a ticket if I can prove I charge my car with 100% solar.
Your current gas prices are about at the level where a lot of people used to cruise at where I live. Haven't really seen it much since it rose to about 2€ per liter (7.57€ or $8.29 per gallon).