What is your budget?
What range are you looking to accomplish?
To move something like a big truck, the Model S drivetrain can easily do it. Make sure you source a late 2013+ non-P or any year P85 for the beefier halfshafts.
Your biggest challenge is going to be getting enough battery to give it a good range. I think there someone has a project going to make a universal Tesla Model S drivetrain controller, like kit cars and conversions such as this.