Planar Energy expects to reduce capital costs by half compared with solid-state battery manufacturing using high-vacuum machinery.

Then it gets rather more high-tech. Capua's high-vacuum, low-temperature equipment removes bergaptene, an irritant, from the oil; and it is then stored under nitrogen gas to stop it oxidising.

When the driver accelerated, the vacuum was insufficient to run the intermittent mode and the wipers would default to high speed.