Of course it can. Anything that uses a computer to operate it or any of its systems can be hacked, but the potential for harm has been largely swept under the rug by car manufacturers.
The fact that criminals can either remotely or directly take control of your car from their laptop was demonstrated in 2013 by security engineers from Twitter and IOActive, a Seattle consultancy company, and again in 2014 at the Black Hat Security Conference in Spain.
