Bluestacks
Currently in Alpha stage, about to roll out Beta stage of this. Still needs a lot of work. I have also seen people running Android in a VM as well.
Do you have a tablet? HP Touchpad for ~$200 or a Kindle Fire ~$200 bucks. I'm sure you could find the TP a lot cheaper somewhere. Since the TP is larger in size, I think the KF would be better as it is a little more compact. Get a mount and put it in your car.
But to be honest, if you are wanting to run a laptop in your car, there are tons of better applications out there than Torque app. Depending on your setup, if you are running a ELM27, then as long as your laptop has Bluetooth.
