The ice can be so treacherous.
You really have to be efficient with your speed.
You must optimize the use of your brakes.
Watch the hills, and the curves.
They appear out of nowhere quite treacherously.
The blackness of night will efficiently blind you,
when a car's bright lights meet you coming.
To optimize your car's efficiency,
you should optimize the engines velocity,
which could be very treacherous.