... down into vapor gases. Then a startup vacuum system (using an old wet-and-dry shop vac) is turned on to get the gases flowing to the engine. The temperature inside the reactor reaches over 2,000 degrees, but the gas cools to about 150 degrees ...

... me $2 worth." The attendant didn't ask but immediately started cleaning the windshield as he or a helper got the gas flowing. "Check under the hood?" came next. Then "Want me to check those tires?" All this came gratis with the purchase ...