The Bolt isn't much better than an electric bike with an umbrella.
I don't know where that comes from. I know friends who have owned one for years, they love it.
Not quite built from an umbrella, but in 1950's, Velorex company in Czechoslovakia, manufactured a low-cost vehicle, called fondly a "flying trenchcoat". The original designers were Stransky brothers, owners of a bicycle shop. Starting in 1936, they designed a small, cheap three-wheeled car, inspired by three-wheelers from Morgan Motor Company. In 1943, they built their first prototype using steel tubing wrapped by dural sheet metal and some bicycle and motorcycle parts. The maximum speed of this flying contraption was 30km/h.
In 1951, in their first manufacturing year they produced 54 vehicles. That compares quite favorably with the 26 EVs produced by GM in Q4 2021.
The price of Velorex was at that time about a quarter of the price of an average car.
The new Aptera three-wheeler EV showed in the second image can be reserved for $25,900 and $44,900. Aptera has a combined solar/battery range of 1,000 miles.
https://www.erik.gjermundsen.net/history-velorex/