Flashback to 1980 and this was the technology that was set to change the automotive world.

"In 1980, the engineers of Gulf + Western Industries invented this advanced Zinc Chloride energy storage system to power electric vehicles. Watch this entertaining and informative film describing what still could be the answer to replacing gasoline in cars and light trucks. Outstanding performance at 1/4 the cost of gasoline."

Says the video description.

But wait...there's more.  Additionally, the video features a load leveling device that was surely ahead of its time.

For some background on Gulf + Western there's this:

"Gulf + Western Inc., corporation that was founded in 1958 by Charles Bluhdorn and became one of the most highly diversified conglomerates in the United States. Gulf + Western took control of the Paramount Pictures Corporation in 1966. Gulf + Western changed its name to Paramount Communications Inc. in 1989 and was acquired by the media conglomerate Viacom Inc. in 1994."