Does the Toyota Highlander have Android Auto?

I’m thinking about buying a Kia Soul EV, but I don’t know what to expect as far as how often I’d need to change the battery. How fast does Kia Soul EV battery degradation happen?

I got a new Nissan Leaf just last year and I’m shocked to hear that the 40-kWh battery is known for degrading quickly in the first year. Is this true? How fast does a 40-kWh battery degrade?

I recently bought an old car that hasn’t been driven in years. The previous owner told me that the car's engine oil fluid levels are fine, but my mechanic is recommending doing an engine oil flush to make sure the car runs smoothly. I don’t understand why I’d do this though. Can you tell me what an engine oil flush is?