No, they were not. That's why I used the subjunctive in my response to you about vegetable oil as a fuel. They were originally supposed to be Wankel engines, but V-6 engines were used instead. All were gasoline fueled.

Meanwhile, if the 88 MPH is in relation to the local frame of reference, then just drive it off a cliff. Plenty of those out west. Once back to the future the flying mechanism could be deployed to avoid the impact at the bottom of the cliff.

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