Tesla provided numerous public exhibits and demonstrations to validate that vacuum energy could be harnessed to do work. A classic example of this was Tesla’s second electronic car in 1931 that ran on electricity that was provided by a “ black box.” In place of the internal combustion engine in the 1930 Pierce Arrow touring car, there was an AC motor. The motor measured a little more than 3 feet long, and a little more than 2 feet in diameter. From it trailed two very thick cables, which connected with the dashboard. In addition, there was an ordinary 12-volt storage battery. The motor was rated at 80 horsepower. Maximum rotor speed was stated to be 30 turns per second. A 6-foot antenna rod was fitted into the rear section of the car. Tesla and his nephew?, Savo, drove a distance of 50 miles through the city of Buffalo and out to the surrounding countryside. The car was tested to speeds of 90 mph, with the speedometer rated to 120. The black box appears to have been the unlimited source of “free electricity” that was the power for the AC motor. Tesla never disclosed the magic of his black box.
http://www.bibliotecapleyades.net/tesla/esp_tesla_14.htm
In automobiles practically nothing has been done in this direction, and yet it would seem they offer the greatest opportunities for application of this principle. The question, however, is which motor to employ - the direct-current or my induction motor. The former has certain preferences as regards the starting and regulation, but the commutators and brushes are very objectionable on an automobile. In view of this I would advocate the use of the induction motor as an ideally simple machine which can never get out of order. The conditions are excellent, inasmuch as a very low frequency is practicable and more than three phases can be used. The regulation should offer little difficulty, and once an automobile on this novel plan is produced its advantages will be readily appreciated.
Yours very truly,
N. Tesla
http://www.tfcbooks.com/tesla/1904-12-29.htm
See Also
Scalar
Disturbance of Equilibrium
16.28 - Keelys Free Electrical Energy Machine
Free Energy