Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net loss	$ (1,386,989)	$ (823,956)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Net income in equity method investment	(45,133)	(44,573)
Depreciation and amortization	110,863	115,166
Gain on disposal of property, plant and equipment	0	(4,500)
Accretion of obligation for lease disposal costs	4,701	4,608
Accretion of beneficial conversion feature and debt discount	100,614	97,762
Equity based compensation	16,819	61,556
Changes in operating assets and liabilities:
Accounts receivable	(95,000)	327,128
Prepaids and other current assets	237,637	142,925
Inventories	(354,893)	(226,237)
Unearned revenues	155,620	736,264
Accounts payable and accrued liabilities	496,024	(257,621)
Net cash (used in) provided by operating activities	(759,737)	128,522
Cash flows from investing activities:
Restricted certificate of deposit	(996)	0
Proceeds from sale of property, plant and equipment	0	4,500
Dividends received from equity method investment	32,895	3,900
Purchase of property, plant and equipment and intangibles	(20,044)	(58,531)
Net cash provided by (used in) investing activities	11,855	(50,131)
Cash flows from financing activities:
Proceeds from sale of stock	11,969	2,134
Proceeds from sale of preferred stock	2,860,000
Principal payments on notes payable	(1,838,418)	(47,491)
Net cash provided by (used in) financing activities	1,033,551	(45,357)
Net increase in cash and cash equivalents	285,669	33,034
Cash and cash equivalents at beginning of period	314,520	397,955
Cash and cash equivalents at end of period	600,189	430,989
Supplemental disclosure of cash flow activities:
Cash paid for interest	211,163	116,280
Supplemental disclosure of noncash financing and investing transactions:
Dealer financing for the purchase of a new vehicle	0	47,513
Decrease in preferred stock and increase in equity for amounts allocated to warrants issued with preferred stock	641,674	0
Decrease in accrued interest and increase in preferred stock for conversion of debentures	13,100	$ 0
Decrease in debt and increase in preferred stock for conversion of debentures	$ 1,339,900