I live in CA. Driving the 2012 Volt over the Grapevine would cause the electronics to overheat and the car would slow down - it couldn't maintain 65 for the du

I live in CA. Driving the 2012 Volt over the Grapevine would cause the electronics to overheat and the car would slow down - it couldn't maintain 65 for the duration of the climb. Honestly, I got tired of adjusting the rear-view mirror. I ended up with about 35K miles on that car, about 65% of them on electric drive.