An electric car can, in principle, remain stationary for an extended period without negatively affecting the car itself. Unlike a conventional internal combustion engine, an electric car has fewer moving parts and requires less maintenance. Here are some aspects to consider when an electric car remains stationary for a long time:

1. Battery charge: When an electric car is not used for an extended period, it is important to monitor the battery charge. A lithium-ion battery, used in most electric cars, has a slow self-discharge. It is recommended to charge the battery to about 50-70% before leaving the car stationary for a long time. This helps to keep the battery within an optimal range.

2. Battery maintenance: It is also important to charge the battery regularly, even if the car is not used. This prevents the battery from discharging too far and can contribute to a longer battery life. Some electric cars have a 'sleep mode' or 'storage mode' that allows you to set the car to an energy-saving mode during standstill.

3. Tire pressure: Regularly check the tire pressure of the electric car. Prolonged standstill can affect tire pressure, and it is important to ensure that the tires have the correct pressure to prevent uneven wear or damage.

4. Maintenance schedule: Consult the maintenance schedule of the electric car manufacturer. Although electric cars generally require less maintenance than conventional cars, there may be specific recommendations for prolonged standstill. This could relate to things like periodically starting the car, checking fluids, or consulting the manufacturer for specific instructions.

It is always advisable to refer to the manual of the specific electric car for detailed information about keeping the car stationary for a long time and any recommendations from the manufacturer.