In the Citroën Ami, the driver's smartphone functions as a secondary gauge cluster.
主要内容：
French automaker Citroën has unveiled the Ami, a tiny electric car that's designed from the outset to be as cheap as possible.
It has a top speed of just 45 kilometers an hour, roughly equal to 28 miles per hour. It's powered by a 6 kilowatt, or 8 horsepower, electric motor.
the Ami has a range of only about 70 kilometers, or 43 miles, per charge.
