Property and Equipment (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Property and Equipment
Computers and software	$ 59,000	$ 59,000
Machinery and equipment	209,000us-gaap_MachineryAndEquipmentGross	209,000us-gaap_MachineryAndEquipmentGross
Furniture and office equipment	86,000us-gaap_FurnitureAndFixturesGross	86,000us-gaap_FurnitureAndFixturesGross
Demonstration vehicles and buses	127,000ENVS_DemonstrationVehiclesAndBuses	127,000ENVS_DemonstrationVehiclesAndBuses
Sub-total	481,000us-gaap_PropertyPlantAndEquipmentGross	(481,000)us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation and amortization	(481,000)	(481,000)
Total

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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