I'm sure you're often right, Barbara. πAnd before someone picks me up on Formula E, where the limits of battery life, acceleration and speed are being pushed to the limit (unlike road cars where cost and long term reliability is a major issue) I quote the following from the Julius BΓ€r website: "Gears: Electric cars do not necessarily need gears. Formula E racing cars do, however, use a gearbox to make the most efficient use of the power delivered from the battery via the motor. During the first Formula E season, all teams used a five-speed gearbox. The rules have since been relaxed, enabling the teams to choose between having a single gear all the way up to four gears. Some teams have chosen to keep the original five gears." - I believe the latest Renault FE powertrain uses a single ration. I think Nissan have experimented with continuous ration gearboxes and some teams have experimented with dual electric motors - with different torque characteristics - as an alternative to gears, but I believe both of those options are banned by FE rules.
Michael Ixer β 2667d