Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net loss	$ (1,895,543)	$ (1,825,980)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Net income in equity method investment	(73,957)	(89,279)
Depreciation and amortization	226,856	211,174
Gain on disposal of property, plant and equipment	(4,500)	20,575
Inventory impairment	0	102,857
Accretion of obligation for lease disposal costs	9,263	9,081
Accretion of beneficial conversion feature and debt discount	9,657	15,066
Equity based compensation	64,785	147,392
Noncash interest expense	185,867	185,866
Changes in operating assets and liabilities:
Accounts receivable	310,665	(301,003)
Prepaids and other current assets	(193,354)	62,927
Inventories	(364,670)	(165,321)
Unearned revenues	1,423,028	1,549,740
Accounts payable and accrued liabilities	(22,273)	416,509
Net cash (used in) provided by operating activities	(324,176)	339,604
Cash flows from investing activities:
Restricted certificate of deposit	(1)	(225,315)
Proceeds from sale of property, plant and equipment	4,500	0
Dividends received from equity method investment	16,104	22,536
Purchase of property, plant and equipment and intangibles	(93,603)	(92,827)
Net cash used in investing activities	(73,000)	(295,606)
Cash flows from financing activities:
Proceeds from sale of stock	3,993	3,743
Proceeds from issuance of debt	360,000	0
Principal payments on notes payable	(50,252)	(208,327)
Net cash provided by (used in) financing activities	313,741	(204,584)
Net change in cash and cash equivalents	(83,435)	(160,586)
Cash and cash equivalents at beginning of year	397,955	558,541
Cash and cash equivalents at end of year	314,520	397,955
Supplemental disclosure of cash flow activities:
Cash paid for interest	242,721	260,405
Supplemental disclosure of noncash financing and investing transactions:
Dealer financing for the purchase of a new vehicle	47,513	0
Increase in equity and decrease in debt for conversion of debentures	0	1,060,000
Increase in equity and decrease in accrued interest for conversion of debentures	0	222,600
Increase in other assets and decrease in property, plant and equipment for cancellation of purchase contract	$ 0	$ 255,000