Note 4 - Property and Equipment, Net - Components of Property and Equipment, Net (Details) - USD ($)	Sep. 30, 2022		Dec. 31, 2021
Total property and equipment	$ 513,108		$ 424,685
Less accumulated depreciation	(207,491)		(152,572)
Net property and equipment	305,617	[1]	272,113
Furniture and Fixtures [Member]
Total property and equipment	60,082		41,799
Leasehold Improvements [Member]
Total property and equipment	40,112		28,112
Machinery and Equipment [Member]
Total property and equipment	144,406		86,266
Vehicles [Member]
Total property and equipment	252,725		252,724
Test/Demo Vehicles [Member]
Total property and equipment	$ 15,784		$ 15,784

[1] The Consolidated Balance Sheet as of September 30, 2022 has been restated. See Note 12.