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Note 5 - Debt (Details Textual)									3 Months Ended			6 Months Ended		12 Months Ended	22 Months Ended
Note 5 - Debt (Details Textual)	May 07, 2025 USD ($) $ / shares shares	Feb. 25, 2025 USD ($)	Feb. 24, 2025 USD ($) $ / shares	Oct. 31, 2024 USD ($) $ / shares shares	Aug. 20, 2024 USD ($)	Jun. 15, 2024 USD ($)	Jan. 18, 2024 USD ($) $ / shares shares	Jul. 15, 2022 USD ($)	Jun. 30, 2025 USD ($) $ / shares shares	Mar. 31, 2025 $ / shares shares	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) $ / shares	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Jun. 15, 2025 USD ($)
Notes Payable, Current									$ 5,365,276			$ 5,365,276		$ 3,596,805
Notes Payable, Noncurrent									1,042			1,042		4,168
Proceeds from Convertible Debt												4,750,500	$ 901,000
Derivative Liability, Current									0			0		132,412
Unrealized Gain (Loss) on Hybrid Instrument, Net									(290,144)		$ 570,519	(573,937)	(999,408)
Proceeds from Issuance of Debt												0	232,067
Gain (Loss) on Conversion of Convertible Debt									$ (76,764)		0	$ (76,764)	0
Conversion of Convertible Note [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares) \| shares							50,505
Cayman Islands Exempt Limited Company [Member] \| A&R SEPA [Member]
Equity Issuance, Maximum Amount of Common Stock Issuable				$ 25,000,000
Cayman Islands Exempt Limited Company [Member] \| Conversion of EVTV-2 Promissory Note into Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares) \| shares										174,348
Debt Instrument, Convertible, Conversion Price (in dollars per share) \| $ / shares										$ 5.7
Cayman Islands Exempt Limited Company [Member] \| Conversion of EVTV-1 Promissory Note into Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares) \| shares									56,144	149,030
Debt Instrument, Convertible, Conversion Price (in dollars per share) \| $ / shares									$ 2.38	$ 4.1		$ 2.38
Cayman Islands Exempt Limited Company [Member] \| Conversion of EVTV-4 Promissory Note into Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares) \| shares	853,275
Debt Instrument, Convertible, Conversion Price (in dollars per share) \| $ / shares	$ 1.77
Premium Financing Agreement [Member]
Debt Instrument, Face Amount						$ 232,067
Debt Instrument, Term (Month)						9 months
Debt Instrument, Periodic Payment						$ 24,093
Notes Payable									$ 140,400			$ 140,400
Debt Instrument, Interest Rate, Stated Percentage						8.25%
July 2025 Premium Financing Agreement [Member] \| AFCO Insurance Premium Finance [Member]
Debt Instrument, Term (Month)															9 months
Debt Instrument, Periodic Payment															$ 14,576
Notes Payable									140,400			140,400
Debt Instrument, Interest Rate, Stated Percentage															8.24%
August 2024 Premium Financing Agreement [Member] \| AFCO Insurance Premium Finance [Member]
Debt Instrument, Face Amount					$ 417,051
Debt Instrument, Term (Month)					11 months
Debt Instrument, Periodic Payment					$ 39,493
Notes Payable									39,224			39,224
Debt Instrument, Interest Rate, Stated Percentage					8.24%
Convertible Note Agreement [Member]
Debt Instrument, Face Amount							$ 1,000,000
Derivative Options, Granted (in shares) \| shares							80,000
Derivative Options, Value Per Share (in dollars per share) \| $ / shares							$ 15
Proceeds from Convertible Debt														$ 901,000
Derivative Liability, Current											431,405		431,405
Convertible Note Agreement [Member] \| Note Portion of Hybrid Note [Member]
Unrealized Gain (Loss) on Hybrid Instrument, Net											1,323		556,174
Convertible Note Agreement [Member] \| Option Portion of Hybrid Note [Member]
Unrealized Gain (Loss) on Hybrid Instrument, Net									0		$ 569,196	132,412	$ 443,234
Pre-Paid Advance Under A&R SEPA for Promissory Notes[Member] \| Cayman Islands Exempt Limited Company [Member]
Debt Instrument, Face Amount				3,000,000
Proceeds from Issuance of Debt				2,635,500
Pre-Paid Advance Under A&R SEPA, Tranche One [Member] \| Cayman Islands Exempt Limited Company [Member]
Debt Instrument, Face Amount				2,000,000
Long-Term Debt, Gross									1,250,000			1,250,000
Pre-Paid Advance Under A&R SEPA, Tranche Two [Member] \| Cayman Islands Exempt Limited Company [Member]
Debt Instrument, Face Amount				$ 1,000,000
Promissory Notes [Member] \| Cayman Islands Exempt Limited Company [Member]
Debt Instrument, Interest Rate, Stated Percentage				0.00%
Debt Instrument, Interest Rate Upon Default Event Occurrence or Registration Event Uncured				18.00%
Debt Instrument, Convertible, Conversion Price (in dollars per share) \| $ / shares				$ 21.48
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger				93.00%
Debt Instrument, Convertible, Threshold Consecutive Trading Days				5
Debt Instrument, Convertible, Floor Price (in dollars per share) \| $ / shares				$ 3.58
Stock Issued During Period, Shares, Commitment Fee (in shares) \| shares				6,410
EVTV-2 Promissory Note [Member]
Unrealized Gain (Loss) on Debt Instrument									0			350
EVTV-2 Promissory Note [Member] \| Cayman Islands Exempt Limited Company [Member]
Debt Instrument, Face Amount				$ 1,000,000
EVTV-1 Promissory Note [Member]
Gain (Loss) on Conversion of Convertible Debt									4,145			4,145
Unrealized Gain (Loss) on Debt Instrument									17			762
Additional Promissory Note [Member] \| Cayman Islands Exempt Limited Company [Member]
Debt Instrument, Face Amount			$ 5,000,000
Debt Instrument, Interest Rate, Stated Percentage			5.00%
Debt Instrument, Interest Rate Upon Default Event Occurrence or Registration Event Uncured			18.00%
Debt Instrument, Convertible, Conversion Price (in dollars per share) \| $ / shares			$ 10
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger			93.00%
Debt Instrument, Convertible, Threshold Consecutive Trading Days			5
Debt Instrument, Convertible, Floor Price (in dollars per share) \| $ / shares			$ 0.713
Additional Promissory Note Tranche One [Member] \| Cayman Islands Exempt Limited Company [Member]
Debt Instrument, Face Amount		$ 3,000,000
Proceeds from Issuance of Debt		2,700,000
Additional Promissory Note Tranche Two [Member] \| Cayman Islands Exempt Limited Company [Member]
Debt Instrument, Face Amount	$ 2,000,000	$ 2,000,000
Proceeds from Issuance of Debt	$ 1,800,000
Long-Term Debt, Gross									500,000			500,000
Gain (Loss) on Conversion of Convertible Debt									(80,909)
EVTV-3 Promissory Note [Member]
Unrealized Gain (Loss) on Debt Instrument									(27,200)			(444,500)
EVTV-4 Promissory Note [Member]
Unrealized Gain (Loss) on Debt Instrument									262,961
Facility Grounds Equipment Loans [Member]
Debt Instrument, Face Amount								$ 25,007
Debt Instrument, Term (Month)								36 months
Debt Instrument, Periodic Payment								$ 521
Notes Payable									7,294			7,294
Notes Payable, Current									6,252			6,252
Notes Payable, Noncurrent									$ 1,042			$ 1,042