> I don't want Doc Brown running out of fussionable materials over my house. The fusion reactor was to provide the 1.21GW of electricity for the flux capacitor

> I don't want Doc Brown running out of fussionable materials over my house. The fusion reactor was to provide the 1.21GW of electricity for the flux capacitor, replacing the previous fission reactor. The other flying cars did not have any visible fusion reactor, suggesting that the hover conversions used a different power source.